Exiv2 - Image metadata library and tools

Exiv2 - Image metadata library and tools
Metadata reference tables
Standard Exif Tags
These are the Exif tags as defined in the
Exif 2.3 standard
IFD1 tags are not listed separately. All IFD0 tags may also be present in IFD1, according to the standard. The second part of the Exiv2 key of an IFD1 tag is
Thumbnail
(instead of
Image
), the other two parts of the key are the same as for IFD0 tags.
Tag (hex)
Tag (dec)
IFD
Key
Type
Tag description
0x000b
11
Image
Exif.Image.ProcessingSoftware
Ascii
The name and version of the software used to post-process the picture.
0x00fe
254
Image
Exif.Image.NewSubfileType
Long
A general indication of the kind of data contained in this subfile.
0x00ff
255
Image
Exif.Image.SubfileType
Short
A general indication of the kind of data contained in this subfile. This field is deprecated. The NewSubfileType field should be used instead.
0x0100
256
Image
Exif.Image.ImageWidth
Long
The number of columns of image data, equal to the number of pixels per row. In JPEG compressed data a JPEG marker is used instead of this tag.
0x0101
257
Image
Exif.Image.ImageLength
Long
The number of rows of image data. In JPEG compressed data a JPEG marker is used instead of this tag.
0x0102
258
Image
Exif.Image.BitsPerSample
Short
The number of bits per image component. In this standard each component of the image is 8 bits, so the value for this tag is 8. See also . In JPEG compressed data a JPEG marker is used instead of this tag.
0x0103
259
Image
Exif.Image.Compression
Short
The compression scheme used for the image data. When a primary image is JPEG compressed, this designation is not necessary and is omitted. When thumbnails use JPEG compression, this tag value is set to 6.
0x0106
262
Image
Exif.Image.PhotometricInterpretation
Short
The pixel composition. In JPEG compressed data a JPEG marker is used instead of this tag.
0x0107
263
Image
Exif.Image.Thresholding
Short
For black and white TIFF files that represent shades of gray, the technique used to convert from gray to black and white pixels.
0x0108
264
Image
Exif.Image.CellWidth
Short
The width of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file.
0x0109
265
Image
Exif.Image.CellLength
Short
The length of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file.
0x010a
266
Image
Exif.Image.FillOrder
Short
The logical order of bits within a byte
0x010d
269
Image
Exif.Image.DocumentName
Ascii
The name of the document from which this image was scanned.
0x010e
270
Image
Exif.Image.ImageDescription
Ascii
A character string giving the title of the image. It may be a comment such as "1988 company picnic" or the like. Two-bytes character codes cannot be used. When a 2-bytes code is necessary, the Exif Private tag is to be used.
0x010f
271
Image
Exif.Image.Make
Ascii
The manufacturer of the recording equipment. This is the manufacturer of the DSC, scanner, video digitizer or other equipment that generated the image. When the field is left blank, it is treated as unknown.
0x0110
272
Image
Exif.Image.Model
Ascii
The model name or model number of the equipment. This is the model name or number of the DSC, scanner, video digitizer or other equipment that generated the image. When the field is left blank, it is treated as unknown.
0x0111
273
Image
Exif.Image.StripOffsets
Long
For each strip, the byte offset of that strip. It is recommended that this be selected so the number of strip bytes does not exceed 64 Kbytes. With JPEG compressed data this designation is not needed and is omitted. See also and .
0x0112
274
Image
Exif.Image.Orientation
Short
The image orientation viewed in terms of rows and columns.
0x0115
277
Image
Exif.Image.SamplesPerPixel
Short
The number of components per pixel. Since this standard applies to RGB and YCbCr images, the value set for this tag is 3. In JPEG compressed data a JPEG marker is used instead of this tag.
0x0116
278
Image
Exif.Image.RowsPerStrip
Long
The number of rows per strip. This is the number of rows in the image of one strip when an image is divided into strips. With JPEG compressed data this designation is not needed and is omitted. See also and .
0x0117
279
Image
Exif.Image.StripByteCounts
Long
The total number of bytes in each strip. With JPEG compressed data this designation is not needed and is omitted.
0x011a
282
Image
Exif.Image.XResolution
Rational
The number of pixels per in the direction. When the image resolution is unknown, 72 [dpi] is designated.
0x011b
283
Image
Exif.Image.YResolution
Rational
The number of pixels per in the direction. The same value as is designated.
0x011c
284
Image
Exif.Image.PlanarConfiguration
Short
Indicates whether pixel components are recorded in a chunky or planar format. In JPEG compressed files a JPEG marker is used instead of this tag. If this field does not exist, the TIFF default of 1 (chunky) is assumed.
0x011d
285
Image
Exif.Image.PageName
Ascii
The name of the page from which this image was scanned.
0x011e
286
Image
Exif.Image.XPosition
Rational
X position of the image. The X offset in ResolutionUnits of the left side of the image, with respect to the left side of the page.
0x011f
287
Image
Exif.Image.YPosition
Rational
Y position of the image. The Y offset in ResolutionUnits of the top of the image, with respect to the top of the page. In the TIFF coordinate scheme, the positive Y direction is down, so that YPosition is always positive.
0x0122
290
Image
Exif.Image.GrayResponseUnit
Short
The precision of the information contained in the GrayResponseCurve.
0x0123
291
Image
Exif.Image.GrayResponseCurve
Short
For grayscale data, the optical density of each possible pixel value.
0x0124
292
Image
Exif.Image.T4Options
Long
T.4-encoding options.
0x0125
293
Image
Exif.Image.T6Options
Long
T.6-encoding options.
0x0128
296
Image
Exif.Image.ResolutionUnit
Short
The unit for measuring and . The same unit is used for both and . If the image resolution is unknown, 2 (inches) is designated.
0x0129
297
Image
Exif.Image.PageNumber
Short
The page number of the page from which this image was scanned.
0x012d
301
Image
Exif.Image.TransferFunction
Short
A transfer function for the image, described in tabular style. Normally this tag is not necessary, since color space is specified in the color space information tag ().
0x0131
305
Image
Exif.Image.Software
Ascii
This tag records the name and version of the software or firmware of the camera or image input device used to generate the image. The detailed format is not specified, but it is recommended that the example shown below be followed. When the field is left blank, it is treated as unknown.
0x0132
306
Image
Exif.Image.DateTime
Ascii
The date and time of image creation. In Exif standard, it is the date and time the file was changed.
0x013b
315
Image
Exif.Image.Artist
Ascii
This tag records the name of the camera owner, photographer or image creator. The detailed format is not specified, but it is recommended that the information be written as in the example below for ease of Interoperability. When the field is left blank, it is treated as unknown. Ex.) "Camera owner, John Smith; Photographer, Michael Brown; Image creator, Ken James"
0x013c
316
Image
Exif.Image.HostComputer
Ascii
This tag records information about the host computer used to generate the image.
0x013d
317
Image
Exif.Image.Predictor
Short
A predictor is a mathematical operator that is applied to the image data before an encoding scheme is applied.
0x013e
318
Image
Exif.Image.WhitePoint
Rational
The chromaticity of the white point of the image. Normally this tag is not necessary, since color space is specified in the colorspace information tag ().
0x013f
319
Image
Exif.Image.PrimaryChromaticities
Rational
The chromaticity of the three primary colors of the image. Normally this tag is not necessary, since colorspace is specified in the colorspace information tag ().
0x0140
320
Image
Exif.Image.ColorMap
Short
A color map for palette color images. This field defines a Red-Green-Blue color map (often called a lookup table) for palette-color images. In a palette-color image, a pixel value is used to index into an RGB lookup table.
0x0141
321
Image
Exif.Image.HalftoneHints
Short
The purpose of the HalftoneHints field is to convey to the halftone function the range of gray levels within a colorimetrically-specified image that should retain tonal detail.
0x0142
322
Image
Exif.Image.TileWidth
Long
The tile width in pixels. This is the number of columns in each tile.
0x0143
323
Image
Exif.Image.TileLength
Long
The tile length (height) in pixels. This is the number of rows in each tile.
0x0144
324
Image
Exif.Image.TileOffsets
Short
For each tile, the byte offset of that tile, as compressed and stored on disk. The offset is specified with respect to the beginning of the TIFF file. Note that this implies that each tile has a location independent of the locations of other tiles.
0x0145
325
Image
Exif.Image.TileByteCounts
Long
For each tile, the number of (compressed) bytes in that tile. See TileOffsets for a description of how the byte counts are ordered.
0x014a
330
Image
Exif.Image.SubIFDs
Long
Defined by Adobe Corporation to enable TIFF Trees within a TIFF file.
0x014c
332
Image
Exif.Image.InkSet
Short
The set of inks used in a separated (PhotometricInterpretation=5) image.
0x014d
333
Image
Exif.Image.InkNames
Ascii
The name of each ink used in a separated (PhotometricInterpretation=5) image.
0x014e
334
Image
Exif.Image.NumberOfInks
Short
The number of inks. Usually equal to SamplesPerPixel, unless there are extra samples.
0x0150
336
Image
Exif.Image.DotRange
Byte
The component values that correspond to a 0% dot and 100% dot.
0x0151
337
Image
Exif.Image.TargetPrinter
Ascii
A description of the printing environment for which this separation is intended.
0x0152
338
Image
Exif.Image.ExtraSamples
Short
Specifies that each pixel has m extra components whose interpretation is defined by one of the values listed below.
0x0153
339
Image
Exif.Image.SampleFormat
Short
This field specifies how to interpret each data sample in a pixel.
0x0154
340
Image
Exif.Image.SMinSampleValue
Short
This field specifies the minimum sample value.
0x0155
341
Image
Exif.Image.SMaxSampleValue
Short
This field specifies the maximum sample value.
0x0156
342
Image
Exif.Image.TransferRange
Short
Expands the range of the TransferFunction
0x0157
343
Image
Exif.Image.ClipPath
Byte
A TIFF ClipPath is intended to mirror the essentials of PostScript's path creation functionality.
0x0158
344
Image
Exif.Image.XClipPathUnits
SShort
The number of units that span the width of the image, in terms of integer ClipPath coordinates.
0x0159
345
Image
Exif.Image.YClipPathUnits
SShort
The number of units that span the height of the image, in terms of integer ClipPath coordinates.
0x015a
346
Image
Exif.Image.Indexed
Short
Indexed images are images where the 'pixels' do not represent color values, but rather an index (usually 8-bit) into a separate color table, the ColorMap.
0x015b
347
Image
Exif.Image.JPEGTables
Undefined
This optional tag may be used to encode the JPEG quantization and Huffman tables for subsequent use by the JPEG decompression process.
0x015f
351
Image
Exif.Image.OPIProxy
Short
OPIProxy gives information concerning whether this image is a low-resolution proxy of a high-resolution image (Adobe OPI).
0x0200
512
Image
Exif.Image.JPEGProc
Long
This field indicates the process used to produce the compressed data
0x0201
513
Image
Exif.Image.JPEGInterchangeFormat
Long
The offset to the start byte (SOI) of JPEG compressed thumbnail data. This is not used for primary image JPEG data.
0x0202
514
Image
Exif.Image.JPEGInterchangeFormatLength
Long
The number of bytes of JPEG compressed thumbnail data. This is not used for primary image JPEG data. JPEG thumbnails are not divided but are recorded as a continuous JPEG bitstream from SOI to EOI. Appn and COM markers should not be recorded. Compressed thumbnails must be recorded in no more than 64 Kbytes, including all other data to be recorded in APP1.
0x0203
515
Image
Exif.Image.JPEGRestartInterval
Short
This Field indicates the length of the restart interval used in the compressed image data.
0x0205
517
Image
Exif.Image.JPEGLosslessPredictors
Short
This Field points to a list of lossless predictor-selection values, one per component.
0x0206
518
Image
Exif.Image.JPEGPointTransforms
Short
This Field points to a list of point transform values, one per component.
0x0207
519
Image
Exif.Image.JPEGQTables
Long
This Field points to a list of offsets to the quantization tables, one per component.
0x0208
520
Image
Exif.Image.JPEGDCTables
Long
This Field points to a list of offsets to the DC Huffman tables or the lossless Huffman tables, one per component.
0x0209
521
Image
Exif.Image.JPEGACTables
Long
This Field points to a list of offsets to the Huffman AC tables, one per component.
0x0211
529
Image
Exif.Image.YCbCrCoefficients
Rational
The matrix coefficients for transformation from RGB to YCbCr image data. No default is given in TIFF; but here the value given in Appendix E, "Color Space Guidelines", is used as the default. The color space is declared in a color space information tag, with the default being the value that gives the optimal image characteristics Interoperability this condition.
0x0212
530
Image
Exif.Image.YCbCrSubSampling
Short
The sampling ratio of chrominance components in relation to the luminance component. In JPEG compressed data a JPEG marker is used instead of this tag.
0x0213
531
Image
Exif.Image.YCbCrPositioning
Short
The position of chrominance components in relation to the luminance component. This field is designated only for JPEG compressed data or uncompressed YCbCr data. The TIFF default is 1 (centered); but when Y:Cb:Cr = 4:2:2 it is recommended in this standard that 2 (co-sited) be used to record data, in order to improve the image quality when viewed on TV systems. When this field does not exist, the reader shall assume the TIFF default. In the case of Y:Cb:Cr = 4:2:0, the TIFF default (centered) is recommended. If the reader does not have the capability of supporting both kinds of , it shall follow the TIFF default regardless of the value in this field. It is preferable that readers be able to support both centered and co-sited positioning.
0x0214
532
Image
Exif.Image.ReferenceBlackWhite
Rational
The reference black point value and reference white point value. No defaults are given in TIFF, but the values below are given as defaults here. The color space is declared in a color space information tag, with the default being the value that gives the optimal image characteristics Interoperability these conditions.
0x02bc
700
Image
Exif.Image.XMLPacket
Byte
XMP Metadata (Adobe technote 9-14-02)
0x4746
18246
Image
Exif.Image.Rating
Short
Rating tag used by Windows
0x4749
18249
Image
Exif.Image.RatingPercent
Short
Rating tag used by Windows, value in percent
0x7032
28722
Image
Exif.Image.VignettingCorrParams
SShort
Sony vignetting correction parameters
0x7035
28725
Image
Exif.Image.ChromaticAberrationCorrParams
SShort
Sony chromatic aberration correction parameters
0x7037
28727
Image
Exif.Image.DistortionCorrParams
SShort
Sony distortion correction parameters
0x800d
32781
Image
Exif.Image.ImageID
Ascii
ImageID is the full pathname of the original, high-resolution image, or any other identifying string that uniquely identifies the original image (Adobe OPI).
0x828d
33421
Image
Exif.Image.CFARepeatPatternDim
Short
Contains two values representing the minimum rows and columns to define the repeating patterns of the color filter array
0x828e
33422
Image
Exif.Image.CFAPattern
Byte
Indicates the color filter array (CFA) geometric pattern of the image sensor when a one-chip color area sensor is used. It does not apply to all sensing methods
0x828f
33423
Image
Exif.Image.BatteryLevel
Rational
Contains a value of the battery level as a fraction or string
0x8298
33432
Image
Exif.Image.Copyright
Ascii
Copyright information. In this standard the tag is used to indicate both the photographer and editor copyrights. It is the copyright notice of the person or organization claiming rights to the image. The Interoperability copyright statement including date and rights should be written in this field; e.g., "Copyright, John Smith, 19xx. All rights reserved.". In this standard the field records both the photographer and editor copyrights, with each recorded in a separate part of the statement. When there is a clear distinction between the photographer and editor copyrights, these are to be written in the order of photographer followed by editor copyright, separated by NULL (in this case since the statement also ends with a NULL, there are two NULL codes). When only the photographer copyright is given, it is terminated by one NULL code. When only the editor copyright is given, the photographer copyright part consists of one space followed by a terminating NULL code, then the editor copyright is given. When the field is left blank, it is treated as unknown.
0x829a
33434
Image
Exif.Image.ExposureTime
Rational
Exposure time, given in seconds.
0x829d
33437
Image
Exif.Image.FNumber
Rational
The F number.
0x83bb
33723
Image
Exif.Image.IPTCNAA
Long
Contains an IPTC/NAA record
0x8649
34377
Image
Exif.Image.ImageResources
Byte
Contains information embedded by the Adobe Photoshop application
0x8769
34665
Image
Exif.Image.ExifTag
Long
A pointer to the Exif IFD. Interoperability, Exif IFD has the same structure as that of the IFD specified in TIFF. ordinarily, however, it does not contain image data as in the case of TIFF.
0x8773
34675
Image
Exif.Image.InterColorProfile
Undefined
Contains an InterColor Consortium (ICC) format color space characterization/profile
0x8822
34850
Image
Exif.Image.ExposureProgram
Short
The class of the program used by the camera to set exposure when the picture is taken.
0x8824
34852
Image
Exif.Image.SpectralSensitivity
Ascii
Indicates the spectral sensitivity of each channel of the camera used.
0x8825
34853
Image
Exif.Image.GPSTag
Long
A pointer to the GPS Info IFD. The Interoperability structure of the GPS Info IFD, like that of Exif IFD, has no image data.
0x8827
34855
Image
Exif.Image.ISOSpeedRatings
Short
Indicates the ISO Speed and ISO Latitude of the camera or input device as specified in ISO 12232.
0x8828
34856
Image
Exif.Image.OECF
Undefined
Indicates the Opto-Electric Conversion Function (OECF) specified in ISO 14524.
0x8829
34857
Image
Exif.Image.Interlace
Short
Indicates the field number of multifield images.
0x882a
34858
Image
Exif.Image.TimeZoneOffset
SShort
This optional tag encodes the time zone of the camera clock (relative to Greenwich Mean Time) used to create the DataTimeOriginal tag-value when the picture was taken. It may also contain the time zone offset of the clock used to create the DateTime tag-value when the image was modified.
0x882b
34859
Image
Exif.Image.SelfTimerMode
Short
Number of seconds image capture was delayed from button press.
0x9003
36867
Image
Exif.Image.DateTimeOriginal
Ascii
The date and time when the original image data was generated.
0x9102
37122
Image
Exif.Image.CompressedBitsPerPixel
Rational
Specific to compressed data; states the compressed bits per pixel.
0x9201
37377
Image
Exif.Image.ShutterSpeedValue
SRational
Shutter speed.
0x9202
37378
Image
Exif.Image.ApertureValue
Rational
The lens aperture.
0x9203
37379
Image
Exif.Image.BrightnessValue
SRational
The value of brightness.
0x9204
37380
Image
Exif.Image.ExposureBiasValue
SRational
The exposure bias.
0x9205
37381
Image
Exif.Image.MaxApertureValue
Rational
The smallest F number of the lens.
0x9206
37382
Image
Exif.Image.SubjectDistance
SRational
The distance to the subject, given in meters.
0x9207
37383
Image
Exif.Image.MeteringMode
Short
The metering mode.
0x9208
37384
Image
Exif.Image.LightSource
Short
The kind of light source.
0x9209
37385
Image
Exif.Image.Flash
Short
Indicates the status of flash when the image was shot.
0x920a
37386
Image
Exif.Image.FocalLength
Rational
The actual focal length of the lens, in mm.
0x920b
37387
Image
Exif.Image.FlashEnergy
Rational
Amount of flash energy (BCPS).
0x920c
37388
Image
Exif.Image.SpatialFrequencyResponse
Undefined
SFR of the camera.
0x920d
37389
Image
Exif.Image.Noise
Undefined
Noise measurement values.
0x920e
37390
Image
Exif.Image.FocalPlaneXResolution
Rational
Number of pixels per FocalPlaneResolutionUnit (37392) in ImageWidth direction for main image.
0x920f
37391
Image
Exif.Image.FocalPlaneYResolution
Rational
Number of pixels per FocalPlaneResolutionUnit (37392) in ImageLength direction for main image.
0x9210
37392
Image
Exif.Image.FocalPlaneResolutionUnit
Short
Unit of measurement for FocalPlaneXResolution(37390) and FocalPlaneYResolution(37391).
0x9211
37393
Image
Exif.Image.ImageNumber
Long
Number assigned to an image, e.g., in a chained image burst.
0x9212
37394
Image
Exif.Image.SecurityClassification
Ascii
Security classification assigned to the image.
0x9213
37395
Image
Exif.Image.ImageHistory
Ascii
Record of what has been done to the image.
0x9214
37396
Image
Exif.Image.SubjectLocation
Short
Indicates the location and area of the main subject in the overall scene.
0x9215
37397
Image
Exif.Image.ExposureIndex
Rational
Encodes the camera exposure index setting when image was captured.
0x9216
37398
Image
Exif.Image.TIFFEPStandardID
Byte
Contains four ASCII characters representing the TIFF/EP standard version of a TIFF/EP file, eg '1', '0', '0', '0'
0x9217
37399
Image
Exif.Image.SensingMethod
Short
Type of image sensor.
0x9c9b
40091
Image
Exif.Image.XPTitle
Byte
Title tag used by Windows, encoded in UCS2
0x9c9c
40092
Image
Exif.Image.XPComment
Byte
Comment tag used by Windows, encoded in UCS2
0x9c9d
40093
Image
Exif.Image.XPAuthor
Byte
Author tag used by Windows, encoded in UCS2
0x9c9e
40094
Image
Exif.Image.XPKeywords
Byte
Keywords tag used by Windows, encoded in UCS2
0x9c9f
40095
Image
Exif.Image.XPSubject
Byte
Subject tag used by Windows, encoded in UCS2
0xc4a5
50341
Image
Exif.Image.PrintImageMatching
Undefined
Print Image Matching, description needed.
0xc612
50706
Image
Exif.Image.DNGVersion
Byte
This tag encodes the DNG four-tier version number. For files compliant with version 1.1.0.0 of the DNG specification, this tag should contain the bytes: 1, 1, 0, 0.
0xc613
50707
Image
Exif.Image.DNGBackwardVersion
Byte
This tag specifies the oldest version of the Digital Negative specification for which a file is compatible. Readers shouldnot attempt to read a file if this tag specifies a version number that is higher than the version number of the specification the reader was based on. In addition to checking the version tags, readers should, for all tags, check the types, counts, and values, to verify it is able to correctly read the file.
0xc614
50708
Image
Exif.Image.UniqueCameraModel
Ascii
Defines a unique, non-localized name for the camera model that created the image in the raw file. This name should include the manufacturer's name to avoid conflicts, and should not be localized, even if the camera name itself is localized for different markets (see LocalizedCameraModel). This string may be used by reader software to index into per-model preferences and replacement profiles.
0xc615
50709
Image
Exif.Image.LocalizedCameraModel
Byte
Similar to the UniqueCameraModel field, except the name can be localized for different markets to match the localization of the camera name.
0xc616
50710
Image
Exif.Image.CFAPlaneColor
Byte
Provides a mapping between the values in the CFAPattern tag and the plane numbers in LinearRaw space. This is a required tag for non-RGB CFA images.
0xc617
50711
Image
Exif.Image.CFALayout
Short
Describes the spatial layout of the CFA.
0xc618
50712
Image
Exif.Image.LinearizationTable
Short
Describes a lookup table that maps stored values into linear values. This tag is typically used to increase compression ratios by storing the raw data in a non-linear, more visually uniform space with fewer total encoding levels. If SamplesPerPixel is not equal to one, this single table applies to all the samples for each pixel.
0xc619
50713
Image
Exif.Image.BlackLevelRepeatDim
Short
Specifies repeat pattern size for the BlackLevel tag.
0xc61a
50714
Image
Exif.Image.BlackLevel
Rational
Specifies the zero light (a.k.a. thermal black or black current) encoding level, as a repeating pattern. The origin of this pattern is the top-left corner of the ActiveArea rectangle. The values are stored in row-column-sample scan order.
0xc61b
50715
Image
Exif.Image.BlackLevelDeltaH
SRational
If the zero light encoding level is a function of the image column, BlackLevelDeltaH specifies the difference between the zero light encoding level for each column and the baseline zero light encoding level. If SamplesPerPixel is not equal to one, this single table applies to all the samples for each pixel.
0xc61c
50716
Image
Exif.Image.BlackLevelDeltaV
SRational
If the zero light encoding level is a function of the image row, this tag specifies the difference between the zero light encoding level for each row and the baseline zero light encoding level. If SamplesPerPixel is not equal to one, this single table applies to all the samples for each pixel.
0xc61d
50717
Image
Exif.Image.WhiteLevel
Long
This tag specifies the fully saturated encoding level for the raw sample values. Saturation is caused either by the sensor itself becoming highly non-linear in response, or by the camera's analog to digital converter clipping.
0xc61e
50718
Image
Exif.Image.DefaultScale
Rational
DefaultScale is required for cameras with non-square pixels. It specifies the default scale factors for each direction to convert the image to square pixels. Typically these factors are selected to approximately preserve total pixel count. For CFA images that use CFALayout equal to 2, 3, 4, or 5, such as the Fujifilm SuperCCD, these two values should usually differ by a factor of 2.0.
0xc61f
50719
Image
Exif.Image.DefaultCropOrigin
Long
Raw images often store extra pixels around the edges of the final image. These extra pixels help prevent interpolation artifacts near the edges of the final image. DefaultCropOrigin specifies the origin of the final image area, in raw image coordinates (i.e., before the DefaultScale has been applied), relative to the top-left corner of the ActiveArea rectangle.
0xc620
50720
Image
Exif.Image.DefaultCropSize
Long
Raw images often store extra pixels around the edges of the final image. These extra pixels help prevent interpolation artifacts near the edges of the final image. DefaultCropSize specifies the size of the final image area, in raw image coordinates (i.e., before the DefaultScale has been applied).
0xc621
50721
Image
Exif.Image.ColorMatrix1
SRational
ColorMatrix1 defines a transformation matrix that converts XYZ values to reference camera native color space values, under the first calibration illuminant. The matrix values are stored in row scan order. The ColorMatrix1 tag is required for all non-monochrome DNG files.
0xc622
50722
Image
Exif.Image.ColorMatrix2
SRational
ColorMatrix2 defines a transformation matrix that converts XYZ values to reference camera native color space values, under the second calibration illuminant. The matrix values are stored in row scan order.
0xc623
50723
Image
Exif.Image.CameraCalibration1
SRational
CameraCalibration1 defines a calibration matrix that transforms reference camera native space values to individual camera native space values under the first calibration illuminant. The matrix is stored in row scan order. This matrix is stored separately from the matrix specified by the ColorMatrix1 tag to allow raw converters to swap in replacement color matrices based on UniqueCameraModel tag, while still taking advantage of any per-individual camera calibration performed by the camera manufacturer.
0xc624
50724
Image
Exif.Image.CameraCalibration2
SRational
CameraCalibration2 defines a calibration matrix that transforms reference camera native space values to individual camera native space values under the second calibration illuminant. The matrix is stored in row scan order. This matrix is stored separately from the matrix specified by the ColorMatrix2 tag to allow raw converters to swap in replacement color matrices based on UniqueCameraModel tag, while still taking advantage of any per-individual camera calibration performed by the camera manufacturer.
0xc625
50725
Image
Exif.Image.ReductionMatrix1
SRational
ReductionMatrix1 defines a dimensionality reduction matrix for use as the first stage in converting color camera native space values to XYZ values, under the first calibration illuminant. This tag may only be used if ColorPlanes is greater than 3. The matrix is stored in row scan order.
0xc626
50726
Image
Exif.Image.ReductionMatrix2
SRational
ReductionMatrix2 defines a dimensionality reduction matrix for use as the first stage in converting color camera native space values to XYZ values, under the second calibration illuminant. This tag may only be used if ColorPlanes is greater than 3. The matrix is stored in row scan order.
0xc627
50727
Image
Exif.Image.AnalogBalance
Rational
Normally the stored raw values are not white balanced, since any digital white balancing will reduce the dynamic range of the final image if the user decides to later adjust the white balance; however, if camera hardware is capable of white balancing the color channels before the signal is digitized, it can improve the dynamic range of the final image. AnalogBalance defines the gain, either analog (recommended) or digital (not recommended) that has been applied the stored raw values.
0xc628
50728
Image
Exif.Image.AsShotNeutral
Short
Specifies the selected white balance at time of capture, encoded as the coordinates of a perfectly neutral color in linear reference space values. The inclusion of this tag precludes the inclusion of the AsShotWhiteXY tag.
0xc629
50729
Image
Exif.Image.AsShotWhiteXY
Rational
Specifies the selected white balance at time of capture, encoded as x-y chromaticity coordinates. The inclusion of this tag precludes the inclusion of the AsShotNeutral tag.
0xc62a
50730
Image
Exif.Image.BaselineExposure
SRational
Camera models vary in the trade-off they make between highlight headroom and shadow noise. Some leave a significant amount of highlight headroom during a normal exposure. This allows significant negative exposure compensation to be applied during raw conversion, but also means normal exposures will contain more shadow noise. Other models leave less headroom during normal exposures. This allows for less negative exposure compensation, but results in lower shadow noise for normal exposures. Because of these differences, a raw converter needs to vary the zero point of its exposure compensation control from model to model. BaselineExposure specifies by how much (in EV units) to move the zero point. Positive values result in brighter default results, while negative values result in darker default results.
0xc62b
50731
Image
Exif.Image.BaselineNoise
Rational
Specifies the relative noise level of the camera model at a baseline ISO value of 100, compared to a reference camera model. Since noise levels tend to vary approximately with the square root of the ISO value, a raw converter can use this value, combined with the current ISO, to estimate the relative noise level of the current image.
0xc62c
50732
Image
Exif.Image.BaselineSharpness
Rational
Specifies the relative amount of sharpening required for this camera model, compared to a reference camera model. Camera models vary in the strengths of their anti-aliasing filters. Cameras with weak or no filters require less sharpening than cameras with strong anti-aliasing filters.
0xc62d
50733
Image
Exif.Image.BayerGreenSplit
Long
Only applies to CFA images using a Bayer pattern filter array. This tag specifies, in arbitrary units, how closely the values of the green pixels in the blue/green rows track the values of the green pixels in the red/green rows. A value of zero means the two kinds of green pixels track closely, while a non-zero value means they sometimes diverge. The useful range for this tag is from 0 (no divergence) to about 5000 (quite large divergence).
0xc62e
50734
Image
Exif.Image.LinearResponseLimit
Rational
Some sensors have an unpredictable non-linearity in their response as they near the upper limit of their encoding range. This non-linearity results in color shifts in the highlight areas of the resulting image unless the raw converter compensates for this effect. LinearResponseLimit specifies the fraction of the encoding range above which the response may become significantly non-linear.
0xc62f
50735
Image
Exif.Image.CameraSerialNumber
Ascii
CameraSerialNumber contains the serial number of the camera or camera body that captured the image.
0xc630
50736
Image
Exif.Image.LensInfo
Rational
Contains information about the lens that captured the image. If the minimum f-stops are unknown, they should be encoded as 0/0.
0xc631
50737
Image
Exif.Image.ChromaBlurRadius
Rational
ChromaBlurRadius provides a hint to the DNG reader about how much chroma blur should be applied to the image. If this tag is omitted, the reader will use its default amount of chroma blurring. Normally this tag is only included for non-CFA images, since the amount of chroma blur required for mosaic images is highly dependent on the de-mosaic algorithm, in which case the DNG reader's default value is likely optimized for its particular de-mosaic algorithm.
0xc632
50738
Image
Exif.Image.AntiAliasStrength
Rational
Provides a hint to the DNG reader about how strong the camera's anti-alias filter is. A value of 0.0 means no anti-alias filter (i.e., the camera is prone to aliasing artifacts with some subjects), while a value of 1.0 means a strong anti-alias filter (i.e., the camera almost never has aliasing artifacts).
0xc633
50739
Image
Exif.Image.ShadowScale
SRational
This tag is used by Adobe Camera Raw to control the sensitivity of its 'Shadows' slider.
0xc634
50740
Image
Exif.Image.DNGPrivateData
Byte
Provides a way for camera manufacturers to store private data in the DNG file for use by their own raw converters, and to have that data preserved by programs that edit DNG files.
0xc635
50741
Image
Exif.Image.MakerNoteSafety
Short
MakerNoteSafety lets the DNG reader know whether the EXIF MakerNote tag is safe to preserve along with the rest of the EXIF data. File browsers and other image management software processing an image with a preserved MakerNote should be aware that any thumbnail image embedded in the MakerNote may be stale, and may not reflect the current state of the full size image.
0xc65a
50778
Image
Exif.Image.CalibrationIlluminant1
Short
The illuminant used for the first set of color calibration tags (ColorMatrix1, CameraCalibration1, ReductionMatrix1). The legal values for this tag are the same as the legal values for the LightSource EXIF tag. If set to 255 (Other), then the IFD must also include a IlluminantData1 tag to specify the x-y chromaticity or spectral power distribution function for this illuminant.
0xc65b
50779
Image
Exif.Image.CalibrationIlluminant2
Short
The illuminant used for an optional second set of color calibration tags (ColorMatrix2, CameraCalibration2, ReductionMatrix2). The legal values for this tag are the same as the legal values for the CalibrationIlluminant1 tag; however, if both are included, neither is allowed to have a value of 0 (unknown). If set to 255 (Other), then the IFD must also include a IlluminantData2 tag to specify the x-y chromaticity or spectral power distribution function for this illuminant.
0xc65c
50780
Image
Exif.Image.BestQualityScale
Rational
For some cameras, the best possible image quality is not achieved by preserving the total pixel count during conversion. For example, Fujifilm SuperCCD images have maximum detail when their total pixel count is doubled. This tag specifies the amount by which the values of the DefaultScale tag need to be multiplied to achieve the best quality image size.
0xc65d
50781
Image
Exif.Image.RawDataUniqueID
Byte
This tag contains a 16-byte unique identifier for the raw image data in the DNG file. DNG readers can use this tag to recognize a particular raw image, even if the file's name or the metadata contained in the file has been changed. If a DNG writer creates such an identifier, it should do so using an algorithm that will ensure that it is very unlikely two different images will end up having the same identifier.
0xc68b
50827
Image
Exif.Image.OriginalRawFileName
Byte
If the DNG file was converted from a non-DNG raw file, then this tag contains the file name of that original raw file.
0xc68c
50828
Image
Exif.Image.OriginalRawFileData
Undefined
If the DNG file was converted from a non-DNG raw file, then this tag contains the compressed contents of that original raw file. The contents of this tag always use the big-endian byte order. The tag contains a sequence of data blocks. Future versions of the DNG specification may define additional data blocks, so DNG readers should ignore extra bytes when parsing this tag. DNG readers should also detect the case where data blocks are missing from the end of the sequence, and should assume a default value for all the missing blocks. There are no padding or alignment bytes between data blocks.
0xc68d
50829
Image
Exif.Image.ActiveArea
Long
This rectangle defines the active (non-masked) pixels of the sensor. The order of the rectangle coordinates is: top, left, bottom, right.
0xc68e
50830
Image
Exif.Image.MaskedAreas
Long
This tag contains a list of non-overlapping rectangle coordinates of fully masked pixels, which can be optionally used by DNG readers to measure the black encoding level. The order of each rectangle's coordinates is: top, left, bottom, right. If the raw image data has already had its black encoding level subtracted, then this tag should not be used, since the masked pixels are no longer useful.
0xc68f
50831
Image
Exif.Image.AsShotICCProfile
Undefined
This tag contains an ICC profile that, in conjunction with the AsShotPreProfileMatrix tag, provides the camera manufacturer with a way to specify a default color rendering from camera color space coordinates (linear reference values) into the ICC profile connection space. The ICC profile connection space is an output referred colorimetric space, whereas the other color calibration tags in DNG specify a conversion into a scene referred colorimetric space. This means that the rendering in this profile should include any desired tone and gamut mapping needed to convert between scene referred values and output referred values.
0xc690
50832
Image
Exif.Image.AsShotPreProfileMatrix
SRational
This tag is used in conjunction with the AsShotICCProfile tag. It specifies a matrix that should be applied to the camera color space coordinates before processing the values through the ICC profile specified in the AsShotICCProfile tag. The matrix is stored in the row scan order. If ColorPlanes is greater than three, then this matrix can (but is not required to) reduce the dimensionality of the color data down to three components, in which case the AsShotICCProfile should have three rather than ColorPlanes input components.
0xc691
50833
Image
Exif.Image.CurrentICCProfile
Undefined
This tag is used in conjunction with the CurrentPreProfileMatrix tag. The CurrentICCProfile and CurrentPreProfileMatrix tags have the same purpose and usage as the AsShotICCProfile and AsShotPreProfileMatrix tag pair, except they are for use by raw file editors rather than camera manufacturers.
0xc692
50834
Image
Exif.Image.CurrentPreProfileMatrix
SRational
This tag is used in conjunction with the CurrentICCProfile tag. The CurrentICCProfile and CurrentPreProfileMatrix tags have the same purpose and usage as the AsShotICCProfile and AsShotPreProfileMatrix tag pair, except they are for use by raw file editors rather than camera manufacturers.
0xc6bf
50879
Image
Exif.Image.ColorimetricReference
Short
The DNG color model documents a transform between camera colors and CIE XYZ values. This tag describes the colorimetric reference for the CIE XYZ values. 0 = The XYZ values are scene-referred. 1 = The XYZ values are output-referred, using the ICC profile perceptual dynamic range. This tag allows output-referred data to be stored in DNG files and still processed correctly by DNG readers.
0xc6f3
50931
Image
Exif.Image.CameraCalibrationSignature
Byte
A UTF-8 encoded string associated with the CameraCalibration1 and CameraCalibration2 tags. The CameraCalibration1 and CameraCalibration2 tags should only be used in the DNG color transform if the string stored in the CameraCalibrationSignature tag exactly matches the string stored in the ProfileCalibrationSignature tag for the selected camera profile.
0xc6f4
50932
Image
Exif.Image.ProfileCalibrationSignature
Byte
A UTF-8 encoded string associated with the camera profile tags. The CameraCalibration1 and CameraCalibration2 tags should only be used in the DNG color transfer if the string stored in the CameraCalibrationSignature tag exactly matches the string stored in the ProfileCalibrationSignature tag for the selected camera profile.
0xc6f5
50933
Image
Exif.Image.ExtraCameraProfiles
Long
A list of file offsets to extra Camera Profile IFDs. Note that the primary camera profile tags should be stored in IFD 0, and the ExtraCameraProfiles tag should only be used if there is more than one camera profile stored in the DNG file.
0xc6f6
50934
Image
Exif.Image.AsShotProfileName
Byte
A UTF-8 encoded string containing the name of the "as shot" camera profile, if any.
0xc6f7
50935
Image
Exif.Image.NoiseReductionApplied
Rational
This tag indicates how much noise reduction has been applied to the raw data on a scale of 0.0 to 1.0. A 0.0 value indicates that no noise reduction has been applied. A 1.0 value indicates that the "ideal" amount of noise reduction has been applied, i.e. that the DNG reader should not apply additional noise reduction by default. A value of 0/0 indicates that this parameter is unknown.
0xc6f8
50936
Image
Exif.Image.ProfileName
Byte
A UTF-8 encoded string containing the name of the camera profile. This tag is optional if there is only a single camera profile stored in the file but is required for all camera profiles if there is more than one camera profile stored in the file.
0xc6f9
50937
Image
Exif.Image.ProfileHueSatMapDims
Long
This tag specifies the number of input samples in each dimension of the hue/saturation/value mapping tables. The data for these tables are stored in ProfileHueSatMapData1, ProfileHueSatMapData2 and ProfileHueSatMapData3 tags. The most common case has ValueDivisions equal to 1, so only hue and saturation are used as inputs to the mapping table.
0xc6fa
50938
Image
Exif.Image.ProfileHueSatMapData1
Float
This tag contains the data for the first hue/saturation/value mapping table. Each entry of the table contains three 32-bit IEEE floating-point values. The first entry is hue shift in degrees; the second entry is saturation scale factor; and the third entry is a value scale factor. The table entries are stored in the tag in nested loop order, with the value divisions in the outer loop, the hue divisions in the middle loop, and the saturation divisions in the inner loop. All zero input saturation entries are required to have a value scale factor of 1.0.
0xc6fb
50939
Image
Exif.Image.ProfileHueSatMapData2
Float
This tag contains the data for the second hue/saturation/value mapping table. Each entry of the table contains three 32-bit IEEE floating-point values. The first entry is hue shift in degrees; the second entry is a saturation scale factor; and the third entry is a value scale factor. The table entries are stored in the tag in nested loop order, with the value divisions in the outer loop, the hue divisions in the middle loop, and the saturation divisions in the inner loop. All zero input saturation entries are required to have a value scale factor of 1.0.
0xc6fc
50940
Image
Exif.Image.ProfileToneCurve
Float
This tag contains a default tone curve that can be applied while processing the image as a starting point for user adjustments. The curve is specified as a list of 32-bit IEEE floating-point value pairs in linear gamma. Each sample has an input value in the range of 0.0 to 1.0, and an output value in the range of 0.0 to 1.0. The first sample is required to be (0.0, 0.0), and the last sample is required to be (1.0, 1.0). Interpolated the curve using a cubic spline.
0xc6fd
50941
Image
Exif.Image.ProfileEmbedPolicy
Long
This tag contains information about the usage rules for the associated camera profile.
0xc6fe
50942
Image
Exif.Image.ProfileCopyright
Byte
A UTF-8 encoded string containing the copyright information for the camera profile. This string always should be preserved along with the other camera profile tags.
0xc714
50964
Image
Exif.Image.ForwardMatrix1
SRational
This tag defines a matrix that maps white balanced camera colors to XYZ D50 colors.
0xc715
50965
Image
Exif.Image.ForwardMatrix2
SRational
This tag defines a matrix that maps white balanced camera colors to XYZ D50 colors.
0xc716
50966
Image
Exif.Image.PreviewApplicationName
Byte
A UTF-8 encoded string containing the name of the application that created the preview stored in the IFD.
0xc717
50967
Image
Exif.Image.PreviewApplicationVersion
Byte
A UTF-8 encoded string containing the version number of the application that created the preview stored in the IFD.
0xc718
50968
Image
Exif.Image.PreviewSettingsName
Byte
A UTF-8 encoded string containing the name of the conversion settings (for example, snapshot name) used for the preview stored in the IFD.
0xc719
50969
Image
Exif.Image.PreviewSettingsDigest
Byte
A unique ID of the conversion settings (for example, MD5 digest) used to render the preview stored in the IFD.
0xc71a
50970
Image
Exif.Image.PreviewColorSpace
Long
This tag specifies the color space in which the rendered preview in this IFD is stored. The default value for this tag is sRGB for color previews and Gray Gamma 2.2 for monochrome previews.
0xc71b
50971
Image
Exif.Image.PreviewDateTime
Ascii
This tag is an ASCII string containing the name of the date/time at which the preview stored in the IFD was rendered. The date/time is encoded using ISO 8601 format.
0xc71c
50972
Image
Exif.Image.RawImageDigest
Undefined
This tag is an MD5 digest of the raw image data. All pixels in the image are processed in row-scan order. Each pixel is zero padded to 16 or 32 bits deep (16-bit for data less than or equal to 16 bits deep, 32-bit otherwise). The data for each pixel is processed in little-endian byte order.
0xc71d
50973
Image
Exif.Image.OriginalRawFileDigest
Undefined
This tag is an MD5 digest of the data stored in the OriginalRawFileData tag.
0xc71e
50974
Image
Exif.Image.SubTileBlockSize
Long
Normally, the pixels within a tile are stored in simple row-scan order. This tag specifies that the pixels within a tile should be grouped first into rectangular blocks of the specified size. These blocks are stored in row-scan order. Within each block, the pixels are stored in row-scan order. The use of a non-default value for this tag requires setting the DNGBackwardVersion tag to at least 1.2.0.0.
0xc71f
50975
Image
Exif.Image.RowInterleaveFactor
Long
This tag specifies that rows of the image are stored in interleaved order. The value of the tag specifies the number of interleaved fields. The use of a non-default value for this tag requires setting the DNGBackwardVersion tag to at least 1.2.0.0.
0xc725
50981
Image
Exif.Image.ProfileLookTableDims
Long
This tag specifies the number of input samples in each dimension of a default "look" table. The data for this table is stored in the ProfileLookTableData tag.
0xc726
50982
Image
Exif.Image.ProfileLookTableData
Float
This tag contains a default "look" table that can be applied while processing the image as a starting point for user adjustment. This table uses the same format as the tables stored in the ProfileHueSatMapData1 and ProfileHueSatMapData2 tags, and is applied in the same color space. However, it should be applied later in the processing pipe, after any exposure compensation and/or fill light stages, but before any tone curve stage. Each entry of the table contains three 32-bit IEEE floating-point values. The first entry is hue shift in degrees, the second entry is a saturation scale factor, and the third entry is a value scale factor. The table entries are stored in the tag in nested loop order, with the value divisions in the outer loop, the hue divisions in the middle loop, and the saturation divisions in the inner loop. All zero input saturation entries are required to have a value scale factor of 1.0.
0xc740
51008
Image
Exif.Image.OpcodeList1
Undefined
Specifies the list of opcodes that should be applied to the raw image, as read directly from the file.
0xc741
51009
Image
Exif.Image.OpcodeList2
Undefined
Specifies the list of opcodes that should be applied to the raw image, just after it has been mapped to linear reference values.
0xc74e
51022
Image
Exif.Image.OpcodeList3
Undefined
Specifies the list of opcodes that should be applied to the raw image, just after it has been demosaiced.
0xc761
51041
Image
Exif.Image.NoiseProfile
Double
NoiseProfile describes the amount of noise in a raw image. Specifically, this tag models the amount of signal-dependent photon (shot) noise and signal-independent sensor readout noise, two common sources of noise in raw images. The model assumes that the noise is white and spatially independent, ignoring fixed pattern effects and other sources of noise (e.g., pixel response non-uniformity, spatially-dependent thermal effects, etc.).
0xc763
51043
Image
Exif.Image.TimeCodes
Byte
The optional TimeCodes tag shall contain an ordered array of time codes. All time codes shall be 8 bytes long and in binary format. The tag may contain from 1 to 10 time codes. When the tag contains more than one time code, the first one shall be the default time code. This specification does not prescribe how to use multiple time codes. Each time code shall be as defined for the 8-byte time code structure in SMPTE 331M-2004, Section 8.3. See also SMPTE 12-1-2008 and SMPTE 309-1999.
0xc764
51044
Image
Exif.Image.FrameRate
SRational
The optional FrameRate tag shall specify the video frame rate in number of image frames per second, expressed as a signed rational number. The numerator shall be non-negative and the denominator shall be positive. This field value is identical to the sample rate field in SMPTE 377-1-2009.
0xc772
51058
Image
Exif.Image.TStop
SRational
The optional TStop tag shall specify the T-stop of the actual lens, expressed as an unsigned rational number. T-stop is also known as T-number or the photometric aperture of the lens. (F-number is the geometric aperture of the lens.) When the exact value is known, the T-stop shall be specified using a single number. Alternately, two numbers shall be used to indicate a T-stop range, in which case the first number shall be the minimum T-stop and the second number shall be the maximum T-stop.
0xc789
51081
Image
Exif.Image.ReelName
Ascii
The optional ReelName tag shall specify a name for a sequence of images, where each image in the sequence has a unique image identifier (including but not limited to file name, frame number, date time, time code).
0xc7a1
51105
Image
Exif.Image.CameraLabel
Ascii
The optional CameraLabel tag shall specify a text label for how the camera is used or assigned in this clip. This tag is similar to CameraLabel in XMP.
0xc791
51089
Image
Exif.Image.OriginalDefaultFinalSize
Long
If this file is a proxy for a larger original DNG file, this tag specifics the default final size of the larger original file from which this proxy was generated. The default value for this tag is default final size of the current DNG file, which is DefaultCropSize * DefaultScale.
0xc792
51090
Image
Exif.Image.OriginalBestQualityFinalSize
Long
If this file is a proxy for a larger original DNG file, this tag specifics the best quality final size of the larger original file from which this proxy was generated. The default value for this tag is the OriginalDefaultFinalSize, if specified. Otherwise the default value for this tag is the best quality size of the current DNG file, which is DefaultCropSize * DefaultScale * BestQualityScale.
0xc793
51091
Image
Exif.Image.OriginalDefaultCropSize
Long
If this file is a proxy for a larger original DNG file, this tag specifics the DefaultCropSize of the larger original file from which this proxy was generated. The default value for this tag is OriginalDefaultFinalSize, if specified. Otherwise, the default value for this tag is the DefaultCropSize of the current DNG file.
0xc7a3
51107
Image
Exif.Image.ProfileHueSatMapEncoding
Long
Provides a way for color profiles to specify how indexing into a 3D HueSatMap is performed during raw conversion. This tag is not applicable to 2.5D HueSatMap tables (i.e., where the Value dimension is 1).
0xc7a4
51108
Image
Exif.Image.ProfileLookTableEncoding
Long
Provides a way for color profiles to specify how indexing into a 3D LookTable is performed during raw conversion. This tag is not applicable to a 2.5D LookTable (i.e., where the Value dimension is 1).
0xc7a5
51109
Image
Exif.Image.BaselineExposureOffset
SRational
Provides a way for color profiles to increase or decrease exposure during raw conversion. BaselineExposureOffset specifies the amount (in EV units) to add to the BaselineExposure tag during image rendering. For example, if the BaselineExposure value for a given camera model is +0.3, and the BaselineExposureOffset value for a given camera profile used to render an image for that camera model is -0.7, then the actual default exposure value used during rendering will be +0.3 - 0.7 = -0.4.
0xc7a6
51110
Image
Exif.Image.DefaultBlackRender
Long
This optional tag in a color profile provides a hint to the raw converter regarding how to handle the black point (e.g., flare subtraction) during rendering. If set to Auto, the raw converter should perform black subtraction during rendering. If set to None, the raw converter should not perform any black subtraction during rendering.
0xc7a7
51111
Image
Exif.Image.NewRawImageDigest
Byte
This tag is a modified MD5 digest of the raw image data. It has been updated from the algorithm used to compute the RawImageDigest tag be more multi-processor friendly, and to support lossy compression algorithms.
0xc7a8
51112
Image
Exif.Image.RawToPreviewGain
Double
The gain (what number the sample values are multiplied by) between the main raw IFD and the preview IFD containing this tag.
0xc7b5
51125
Image
Exif.Image.DefaultUserCrop
Rational
Specifies a default user crop rectangle in relative coordinates. The values must satisfy: 0.0 <= top < bottom <= 1.0, 0.0 <= left < right <= 1.0.The default values of (top = 0, left = 0, bottom = 1, right = 1) correspond exactly to the default crop rectangle (as specified by the DefaultCropOrigin and DefaultCropSize tags).
0xc7e9
51177
Image
Exif.Image.DepthFormat
Short
Specifies the encoding of any depth data in the file. Can be unknown (apart from nearer distances being closer to zero, and farther distances being closer to the maximum value), linear (values vary linearly from zero representing DepthNear to the maximum value representing DepthFar), or inverse (values are stored inverse linearly, with zero representing DepthNear and the maximum value representing DepthFar).
0xc7ea
51178
Image
Exif.Image.DepthNear
Rational
Specifies distance from the camera represented by the zero value in the depth map. 0/0 means unknown.
0xc7eb
51179
Image
Exif.Image.DepthFar
Rational
Specifies distance from the camera represented by the maximum value in the depth map. 0/0 means unknown. 1/0 means infinity, which is valid for unknown and inverse depth formats.
0xc7ec
51180
Image
Exif.Image.DepthUnits
Short
Specifies the measurement units for the DepthNear and DepthFar tags.
0xc7ed
51181
Image
Exif.Image.DepthMeasureType
Short
Specifies the measurement geometry for the depth map. Can be unknown, measured along the optical axis, or measured along the optical ray passing through each pixel.
0xc7ee
51182
Image
Exif.Image.EnhanceParams
Ascii
A string that documents how the enhanced image data was processed.
0xcd2d
52525
Image
Exif.Image.ProfileGainTableMap
Undefined
Contains spatially varying gain tables that can be applied while processing the image as a starting point for user adjustments.
0xcd2e
52526
Image
Exif.Image.SemanticName
Ascii
A string that identifies the semantic mask.
0xcd30
52528
Image
Exif.Image.SemanticInstanceID
Ascii
A string that identifies a specific instance in a semantic mask.
0xcd31
52529
Image
Exif.Image.CalibrationIlluminant3
Short
The illuminant used for an optional third set of color calibration tags (ColorMatrix3, CameraCalibration3, ReductionMatrix3). The legal values for this tag are the same as the legal values for the LightSource EXIF tag; CalibrationIlluminant1 and CalibrationIlluminant2 must also be present. If set to 255 (Other), then the IFD must also include a IlluminantData3 tag to specify the x-y chromaticity or spectral power distribution function for this illuminant.
0xcd32
52530
Image
Exif.Image.CameraCalibration3
SRational
CameraCalibration3 defines a calibration matrix that transforms reference camera native space values to individual camera native space values under the third calibration illuminant. The matrix is stored in row scan order. This matrix is stored separately from the matrix specified by the ColorMatrix3 tag to allow raw converters to swap in replacement color matrices based on UniqueCameraModel tag, while still taking advantage of any per-individual camera calibration performed by the camera manufacturer.
0xcd33
52531
Image
Exif.Image.ColorMatrix3
SRational
ColorMatrix3 defines a transformation matrix that converts XYZ values to reference camera native color space values, under the third calibration illuminant. The matrix values are stored in row scan order.
0xcd34
52532
Image
Exif.Image.ForwardMatrix3
SRational
This tag defines a matrix that maps white balanced camera colors to XYZ D50 colors.
0xcd35
52533
Image
Exif.Image.IlluminantData1
Undefined
When the CalibrationIlluminant1 tag is set to 255 (Other), then the IlluminantData1 tag is required and specifies the data for the first illuminant. Otherwise, this tag is ignored. The illuminant data may be specified as either a x-y chromaticity coordinate or as a spectral power distribution function.
0xcd36
52534
Image
Exif.Image.IlluminantData2
Undefined
When the CalibrationIlluminant2 tag is set to 255 (Other), then the IlluminantData2 tag is required and specifies the data for the second illuminant. Otherwise, this tag is ignored. The format of the data is the same as IlluminantData1.
0xcd37
52535
Image
Exif.Image.IlluminantData3
Undefined
When the CalibrationIlluminant3 tag is set to 255 (Other), then the IlluminantData3 tag is required and specifies the data for the third illuminant. Otherwise, this tag is ignored. The format of the data is the same as IlluminantData1.
0xcd38
52536
Image
Exif.Image.MaskSubArea
Long
This tag identifies the crop rectangle of this IFD's mask, relative to the main image.
0xcd39
52537
Image
Exif.Image.ProfileHueSatMapData3
Float
This tag contains the data for the third hue/saturation/value mapping table. Each entry of the table contains three 32-bit IEEE floating-point values. The first entry is hue shift in degrees; the second entry is saturation scale factor; and the third entry is a value scale factor. The table entries are stored in the tag in nested loop order, with the value divisions in the outer loop, the hue divisions in the middle loop, and the saturation divisions in the inner loop. All zero input saturation entries are required to have a value scale factor of 1.0.
0xcd3a
52538
Image
Exif.Image.ReductionMatrix3
SRational
ReductionMatrix3 defines a dimensionality reduction matrix for use as the first stage in converting color camera native space values to XYZ values, under the third calibration illuminant. This tag may only be used if ColorPlanes is greater than 3. The matrix is stored in row scan order.
0xcd3f
52543
Image
Exif.Image.RGBTables
Undefined
This tag specifies color transforms that can be applied to masked image regions. Color transforms are specified using RGB-to-RGB color lookup tables. These tables are associated with Semantic Masks to limit the color transform to a sub-region of the image. The overall color transform is a linear combination of the color tables, weighted by their corresponding Semantic Masks.
0xcd40
52544
Image
Exif.Image.ProfileGainTableMap2
Undefined
This tag is an extended version of ProfileGainTableMap.
0xcd43
52547
Image
Exif.Image.ColumnInterleaveFactor
Long
This tag specifies that columns of the image are stored in interleaved order. The value of the tag specifies the number of interleaved fields. The use of a non-default value for this tag requires setting the DNGBackwardVersion tag to at least 1.7.1.0.
0xcd44
52548
Image
Exif.Image.ImageSequenceInfo
Undefined
This is an informative tag that describes how the image file relates to other image files captured in a sequence. Applications include focus stacking, merging multiple frames to reduce noise, time lapses, exposure brackets, stitched images for super resolution, and so on.
0xcd46
52550
Image
Exif.Image.ImageStats
Undefined
This is an informative tag that provides basic statistical information about the pixel values of the image in this IFD. Possible applications include normalizing brightness of images when multiple images are displayed together (especially when mixing Standard Dynamic Range and High Dynamic Range images), identifying underexposed or overexposed images, and so on.
0xcd47
52551
Image
Exif.Image.ProfileDynamicRange
Undefined
This tag describes the intended rendering output dynamic range for a given camera profile.
0xcd48
52552
Image
Exif.Image.ProfileGroupName
Ascii
A UTF-8 encoded string containing the 'group name' of the camera profile. The purpose of this tag is to associate two or more related camera profiles into a common group.
0xcd49
52553
Image
Exif.Image.JXLDistance
Float
This optional tag specifies the distance parameter used to encode the JPEG XL data in this IFD. A value of 0.0 means lossless compression, while values greater than 0.0 means lossy compression.
0xcd4a
52554
Image
Exif.Image.JXLEffort
Long
This optional tag specifies the effort parameter used to encode the JPEG XL data in this IFD. Values range from 1 (low) to 9 (high).
0xcd4b
52555
Image
Exif.Image.JXLDecodeSpeed
Long
This optional tag specifies the decode speed parameter used to encode the JPEG XL data in this IFD. Values range from 1 (slow) to 4 (fast).
0x829a
33434
Photo
Exif.Photo.ExposureTime
Rational
Exposure time, given in seconds (sec).
0x829d
33437
Photo
Exif.Photo.FNumber
Rational
The F number.
0x8822
34850
Photo
Exif.Photo.ExposureProgram
Short
The class of the program used by the camera to set exposure when the picture is taken.
0x8824
34852
Photo
Exif.Photo.SpectralSensitivity
Ascii
Indicates the spectral sensitivity of each channel of the camera used. The tag value is an ASCII string compatible with the standard developed by the ASTM Technical Committee.
0x8827
34855
Photo
Exif.Photo.ISOSpeedRatings
Short
Indicates the ISO Speed and ISO Latitude of the camera or input device as specified in ISO 12232.
0x8828
34856
Photo
Exif.Photo.OECF
Undefined
Indicates the Opto-Electoric Conversion Function (OECF) specified in ISO 14524. is the relationship between the camera optical input and the image values.
0x8830
34864
Photo
Exif.Photo.SensitivityType
Short
The SensitivityType tag indicates which one of the parameters of ISO12232 is the PhotographicSensitivity tag. Although it is an optional tag, it should be recorded when a PhotographicSensitivity tag is recorded. Value = 4, 5, 6, or 7 may be used in case that the values of plural parameters are the same.
0x8831
34865
Photo
Exif.Photo.StandardOutputSensitivity
Long
This tag indicates the standard output sensitivity value of a camera or input device defined in ISO 12232. When recording this tag, the PhotographicSensitivity and SensitivityType tags shall also be recorded.
0x8832
34866
Photo
Exif.Photo.RecommendedExposureIndex
Long
This tag indicates the recommended exposure index value of a camera or input device defined in ISO 12232. When recording this tag, the PhotographicSensitivity and SensitivityType tags shall also be recorded.
0x8833
34867
Photo
Exif.Photo.ISOSpeed
Long
This tag indicates the ISO speed value of a camera or input device that is defined in ISO 12232. When recording this tag, the PhotographicSensitivity and SensitivityType tags shall also be recorded.
0x8834
34868
Photo
Exif.Photo.ISOSpeedLatitudeyyy
Long
This tag indicates the ISO speed latitude yyy value of a camera or input device that is defined in ISO 12232. However, this tag shall not be recorded without ISOSpeed and ISOSpeedLatitudezzz.
0x8835
34869
Photo
Exif.Photo.ISOSpeedLatitudezzz
Long
This tag indicates the ISO speed latitude zzz value of a camera or input device that is defined in ISO 12232. However, this tag shall not be recorded without ISOSpeed and ISOSpeedLatitudeyyy.
0x9000
36864
Photo
Exif.Photo.ExifVersion
Undefined
The version of this standard supported. Nonexistence of this field is taken to mean nonconformance to the standard.
0x9003
36867
Photo
Exif.Photo.DateTimeOriginal
Ascii
The date and time when the original image data was generated. For a digital still camera the date and time the picture was taken are recorded.
0x9004
36868
Photo
Exif.Photo.DateTimeDigitized
Ascii
The date and time when the image was stored as digital data.
0x9010
36880
Photo
Exif.Photo.OffsetTime
Ascii
Time difference from Universal Time Coordinated including daylight saving time of DateTime tag.
0x9011
36881
Photo
Exif.Photo.OffsetTimeOriginal
Ascii
Time difference from Universal Time Coordinated including daylight saving time of DateTimeOriginal tag.
0x9012
36882
Photo
Exif.Photo.OffsetTimeDigitized
Ascii
Time difference from Universal Time Coordinated including daylight saving time of DateTimeDigitized tag.
0x9101
37121
Photo
Exif.Photo.ComponentsConfiguration
Undefined
Information specific to compressed data. The channels of each component are arranged in order from the 1st component to the 4th. For uncompressed data the data arrangement is given in the tag. However, since can only express the order of Y, Cb and Cr, this tag is provided for cases when compressed data uses components other than Y, Cb, and Cr and to enable support of other sequences.
0x9102
37122
Photo
Exif.Photo.CompressedBitsPerPixel
Rational
Information specific to compressed data. The compression mode used for a compressed image is indicated in unit bits per pixel.
0x9201
37377
Photo
Exif.Photo.ShutterSpeedValue
SRational
Shutter speed. The unit is the APEX (Additive System of Photographic Exposure) setting.
0x9202
37378
Photo
Exif.Photo.ApertureValue
Rational
The lens aperture. The unit is the APEX value.
0x9203
37379
Photo
Exif.Photo.BrightnessValue
SRational
The value of brightness. The unit is the APEX value. Ordinarily it is given in the range of -99.99 to 99.99.
0x9204
37380
Photo
Exif.Photo.ExposureBiasValue
SRational
The exposure bias. The units is the APEX value. Ordinarily it is given in the range of -99.99 to 99.99.
0x9205
37381
Photo
Exif.Photo.MaxApertureValue
Rational
The smallest F number of the lens. The unit is the APEX value. Ordinarily it is given in the range of 00.00 to 99.99, but it is not limited to this range.
0x9206
37382
Photo
Exif.Photo.SubjectDistance
Rational
The distance to the subject, given in meters.
0x9207
37383
Photo
Exif.Photo.MeteringMode
Short
The metering mode.
0x9208
37384
Photo
Exif.Photo.LightSource
Short
The kind of light source.
0x9209
37385
Photo
Exif.Photo.Flash
Short
This tag is recorded when an image is taken using a strobe light (flash).
0x920a
37386
Photo
Exif.Photo.FocalLength
Rational
The actual focal length of the lens, in mm. Conversion is not made to the focal length of a 35 mm film camera.
0x9214
37396
Photo
Exif.Photo.SubjectArea
Short
This tag indicates the location and area of the main subject in the overall scene.
0x927c
37500
Photo
Exif.Photo.MakerNote
Undefined
A tag for manufacturers of Exif writers to record any desired information. The contents are up to the manufacturer.
0x9286
37510
Photo
Exif.Photo.UserComment
Comment
A tag for Exif users to write keywords or comments on the image besides those in , and without the character code limitations of the tag.
0x9290
37520
Photo
Exif.Photo.SubSecTime
Ascii
A tag used to record fractions of seconds for the tag.
0x9291
37521
Photo
Exif.Photo.SubSecTimeOriginal
Ascii
A tag used to record fractions of seconds for the tag.
0x9292
37522
Photo
Exif.Photo.SubSecTimeDigitized
Ascii
A tag used to record fractions of seconds for the tag.
0x9400
37888
Photo
Exif.Photo.Temperature
SRational
Temperature as the ambient situation at the shot, for example the room temperature where the photographer was holding the camera. The unit is degrees C.
0x9401
37889
Photo
Exif.Photo.Humidity
Rational
Humidity as the ambient situation at the shot, for example the room humidity where the photographer was holding the camera. The unit is %.
0x9402
37890
Photo
Exif.Photo.Pressure
Rational
Pressure as the ambient situation at the shot, for example the room atmosphere where the photographer was holding the camera or the water pressure under the sea. The unit is hPa.
0x9403
37891
Photo
Exif.Photo.WaterDepth
SRational
Water depth as the ambient situation at the shot, for example the water depth of the camera at underwater photography. The unit is m.
0x9404
37892
Photo
Exif.Photo.Acceleration
Rational
Acceleration (a scalar regardless of direction) as the ambient situation at the shot, for example the driving acceleration of the vehicle which the photographer rode on at the shot. The unit is mGal (10e-5 m/s^2).
0x9405
37893
Photo
Exif.Photo.CameraElevationAngle
SRational
Elevation/depression. angle of the orientation of the camera(imaging optical axis) as the ambient situation at the shot. The unit is degrees.
0xa000
40960
Photo
Exif.Photo.FlashpixVersion
Undefined
The FlashPix format version supported by a FPXR file.
0xa001
40961
Photo
Exif.Photo.ColorSpace
Short
The color space information tag is always recorded as the color space specifier. Normally sRGB is used to define the color space based on the PC monitor conditions and environment. If a color space other than sRGB is used, Uncalibrated is set. Image data recorded as Uncalibrated can be treated as sRGB when it is converted to FlashPix.
0xa002
40962
Photo
Exif.Photo.PixelXDimension
Long
Information specific to compressed data. When a compressed file is recorded, the valid width of the meaningful image must be recorded in this tag, whether or not there is padding data or a restart marker. This tag should not exist in an uncompressed file.
0xa003
40963
Photo
Exif.Photo.PixelYDimension
Long
Information specific to compressed data. When a compressed file is recorded, the valid height of the meaningful image must be recorded in this tag, whether or not there is padding data or a restart marker. This tag should not exist in an uncompressed file. Since data padding is unnecessary in the vertical direction, the number of lines recorded in this valid image height tag will in fact be the same as that recorded in the SOF.
0xa004
40964
Photo
Exif.Photo.RelatedSoundFile
Ascii
This tag is used to record the name of an audio file related to the image data. The only relational information recorded here is the Exif audio file name and extension (an ASCII string consisting of 8 characters + '.' + 3 characters). The path is not recorded.
0xa005
40965
Photo
Exif.Photo.InteroperabilityTag
Long
Interoperability IFD is composed of tags which stores the information to ensure the Interoperability and pointed by the following tag located in Exif IFD. The Interoperability structure of Interoperability IFD is the same as TIFF defined IFD structure but does not contain the image data characteristically compared with normal TIFF IFD.
0xa20b
41483
Photo
Exif.Photo.FlashEnergy
Rational
Indicates the strobe energy at the time the image is captured, as measured in Beam Candle Power Seconds (BCPS).
0xa20c
41484
Photo
Exif.Photo.SpatialFrequencyResponse
Undefined
This tag records the camera or input device spatial frequency table and SFR values in the direction of image width, image height, and diagonal direction, as specified in ISO 12233.
0xa20e
41486
Photo
Exif.Photo.FocalPlaneXResolution
Rational
Indicates the number of pixels in the image width (X) direction per on the camera focal plane.
0xa20f
41487
Photo
Exif.Photo.FocalPlaneYResolution
Rational
Indicates the number of pixels in the image height (V) direction per on the camera focal plane.
0xa210
41488
Photo
Exif.Photo.FocalPlaneResolutionUnit
Short
Indicates the unit for measuring and . This value is the same as the .
0xa214
41492
Photo
Exif.Photo.SubjectLocation
Short
Indicates the location of the main subject in the scene. The value of this tag represents the pixel at the center of the main subject relative to the left edge, prior to rotation processing as per the tag. The first value indicates the X column number and second indicates the Y row number.
0xa215
41493
Photo
Exif.Photo.ExposureIndex
Rational
Indicates the exposure index selected on the camera or input device at the time the image is captured.
0xa217
41495
Photo
Exif.Photo.SensingMethod
Short
Indicates the image sensor type on the camera or input device.
0xa300
41728
Photo
Exif.Photo.FileSource
Undefined
Indicates the image source. If a DSC recorded the image, this tag value of this tag always be set to 3, indicating that the image was recorded on a DSC.
0xa301
41729
Photo
Exif.Photo.SceneType
Undefined
Indicates the type of scene. If a DSC recorded the image, this tag value must always be set to 1, indicating that the image was directly photographed.
0xa302
41730
Photo
Exif.Photo.CFAPattern
Undefined
Indicates the color filter array (CFA) geometric pattern of the image sensor when a one-chip color area sensor is used. It does not apply to all sensing methods.
0xa401
41985
Photo
Exif.Photo.CustomRendered
Short
This tag indicates the use of special processing on image data, such as rendering geared to output. When special processing is performed, the reader is expected to disable or minimize any further processing.
0xa402
41986
Photo
Exif.Photo.ExposureMode
Short
This tag indicates the exposure mode set when the image was shot. In auto-bracketing mode, the camera shoots a series of frames of the same scene at different exposure settings.
0xa403
41987
Photo
Exif.Photo.WhiteBalance
Short
This tag indicates the white balance mode set when the image was shot.
0xa404
41988
Photo
Exif.Photo.DigitalZoomRatio
Rational
This tag indicates the digital zoom ratio when the image was shot. If the numerator of the recorded value is 0, this indicates that digital zoom was not used.
0xa405
41989
Photo
Exif.Photo.FocalLengthIn35mmFilm
Short
This tag indicates the equivalent focal length assuming a 35mm film camera, in mm. A value of 0 means the focal length is unknown. Note that this tag differs from the tag.
0xa406
41990
Photo
Exif.Photo.SceneCaptureType
Short
This tag indicates the type of scene that was shot. It can also be used to record the mode in which the image was shot. Note that this differs from the tag.
0xa407
41991
Photo
Exif.Photo.GainControl
Short
This tag indicates the degree of overall image gain adjustment.
0xa408
41992
Photo
Exif.Photo.Contrast
Short
This tag indicates the direction of contrast processing applied by the camera when the image was shot.
0xa409
41993
Photo
Exif.Photo.Saturation
Short
This tag indicates the direction of saturation processing applied by the camera when the image was shot.
0xa40a
41994
Photo
Exif.Photo.Sharpness
Short
This tag indicates the direction of sharpness processing applied by the camera when the image was shot.
0xa40b
41995
Photo
Exif.Photo.DeviceSettingDescription
Undefined
This tag indicates information on the picture-taking conditions of a particular camera model. The tag is used only to indicate the picture-taking conditions in the reader.
0xa40c
41996
Photo
Exif.Photo.SubjectDistanceRange
Short
This tag indicates the distance to the subject.
0xa420
42016
Photo
Exif.Photo.ImageUniqueID
Ascii
This tag indicates an identifier assigned uniquely to each image. It is recorded as an ASCII string equivalent to hexadecimal notation and 128-bit fixed length.
0xa430
42032
Photo
Exif.Photo.CameraOwnerName
Ascii
This tag records the owner of a camera used in photography as an ASCII string.
0xa431
42033
Photo
Exif.Photo.BodySerialNumber
Ascii
This tag records the serial number of the body of the camera that was used in photography as an ASCII string.
0xa432
42034
Photo
Exif.Photo.LensSpecification
Rational
This tag notes minimum focal length, maximum focal length, minimum F number in the minimum focal length, and minimum F number in the maximum focal length, which are specification information for the lens that was used in photography. When the minimum F number is unknown, the notation is 0/0
0xa433
42035
Photo
Exif.Photo.LensMake
Ascii
This tag records the lens manufactor as an ASCII string.
0xa434
42036
Photo
Exif.Photo.LensModel
Ascii
This tag records the lens's model name and model number as an ASCII string.
0xa435
42037
Photo
Exif.Photo.LensSerialNumber
Ascii
This tag records the serial number of the interchangeable lens that was used in photography as an ASCII string.
0xa436
42038
Photo
Exif.Photo.ImageTitle
Ascii
This tag records the title of the image.
0xa437
42039
Photo
Exif.Photo.Photographer
Ascii
This tag records the name of the photographer.
0xa438
42040
Photo
Exif.Photo.ImageEditor
Ascii
This tag records the name of the main person who edited the image. Preferably, a single name is written (individual name, group/organization name, etc.), but multiple main editors may be entered.
0xa439
42041
Photo
Exif.Photo.CameraFirmware
Ascii
This tag records the name and version of the software or firmware of the camera used to generate the image.
0xa43a
42042
Photo
Exif.Photo.RAWDevelopingSoftware
Ascii
This tag records the name and version of the software used to develop the RAW image.
0xa43b
42043
Photo
Exif.Photo.ImageEditingSoftware
Ascii
This tag records the name and version of the main software used for processing and editing the image. Preferably, a single software is written, but multiple main software may be entered.
0xa43c
42044
Photo
Exif.Photo.MetadataEditingSoftware
Ascii
This tag records the name and version of one software used to edit the metadata of the image without processing or editing of the image data itself.
0xa460
42080
Photo
Exif.Photo.CompositeImage
Short
Indicates whether the recorded image is a composite image or not.
0xa461
42081
Photo
Exif.Photo.SourceImageNumberOfCompositeImage
Short
Indicates the number of the source images (tentatively recorded images) captured for a composite Image.
0xa462
42082
Photo
Exif.Photo.SourceExposureTimesOfCompositeImage
Undefined
For a composite image, records the parameters relating exposure time of the exposures for generating the said composite image, such as respective exposure times of captured source images (tentatively recorded images).
0xa500
42240
Photo
Exif.Photo.Gamma
Rational
Indicates the value of coefficient gamma. The formula of transfer function used for image reproduction is expressed as follows: (reproduced value) = (input value)^gamma. Both reproduced value and input value indicate normalized value, whose minimum value is 0 and maximum value is 1.
0x0001
Iop
Exif.Iop.InteroperabilityIndex
Ascii
Indicates the identification of the Interoperability rule. Use "R98" for stating ExifR98 Rules. Four bytes used including the termination code (NULL). see the separate volume of Recommended Exif Interoperability Rules (ExifR98) for other tags used for ExifR98.
0x0002
Iop
Exif.Iop.InteroperabilityVersion
Undefined
Interoperability version
0x1000
4096
Iop
Exif.Iop.RelatedImageFileFormat
Ascii
File format of image file
0x1001
4097
Iop
Exif.Iop.RelatedImageWidth
Long
Image width
0x1002
4098
Iop
Exif.Iop.RelatedImageLength
Long
Image height
0x0000
GPSInfo
Exif.GPSInfo.GPSVersionID
Byte
Indicates the version of . The version is given as 2.0.0.0. This tag is mandatory when tag is present. (Note: The tag is given in bytes, unlike the tag. When the version is 2.0.0.0, the tag value is 02000000.H).
0x0001
GPSInfo
Exif.GPSInfo.GPSLatitudeRef
Ascii
Indicates whether the latitude is north or south latitude. The ASCII value 'N' indicates north latitude, and 'S' is south latitude.
0x0002
GPSInfo
Exif.GPSInfo.GPSLatitude
Rational
Indicates the latitude. The latitude is expressed as three RATIONAL values giving the degrees, minutes, and seconds, respectively. When degrees, minutes and seconds are expressed, the format is dd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is dd/1,mmmm/100,0/1.
0x0003
GPSInfo
Exif.GPSInfo.GPSLongitudeRef
Ascii
Indicates whether the longitude is east or west longitude. ASCII 'E' indicates east longitude, and 'W' is west longitude.
0x0004
GPSInfo
Exif.GPSInfo.GPSLongitude
Rational
Indicates the longitude. The longitude is expressed as three RATIONAL values giving the degrees, minutes, and seconds, respectively. When degrees, minutes and seconds are expressed, the format is ddd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is ddd/1,mmmm/100,0/1.
0x0005
GPSInfo
Exif.GPSInfo.GPSAltitudeRef
Byte
Indicates the altitude used as the reference altitude. If the reference is sea level and the altitude is above sea level, 0 is given. If the altitude is below sea level, a value of 1 is given and the altitude is indicated as an absolute value in the GSPAltitude tag. The reference unit is meters. Note that this tag is BYTE type, unlike other reference tags.
0x0006
GPSInfo
Exif.GPSInfo.GPSAltitude
Rational
Indicates the altitude based on the reference in GPSAltitudeRef. Altitude is expressed as one RATIONAL value. The reference unit is meters.
0x0007
GPSInfo
Exif.GPSInfo.GPSTimeStamp
Rational
Indicates the time as UTC (Coordinated Universal Time). is expressed as three RATIONAL values giving the hour, minute, and second (atomic clock).
0x0008
GPSInfo
Exif.GPSInfo.GPSSatellites
Ascii
Indicates the GPS satellites used for measurements. This tag can be used to describe the number of satellites, their ID number, angle of elevation, azimuth, SNR and other information in ASCII notation. The format is not specified. If the GPS receiver is incapable of taking measurements, value of the tag is set to NULL.
0x0009
GPSInfo
Exif.GPSInfo.GPSStatus
Ascii
Indicates the status of the GPS receiver when the image is recorded. "A" means measurement is in progress, and "V" means the measurement is Interoperability.
0x000a
10
GPSInfo
Exif.GPSInfo.GPSMeasureMode
Ascii
Indicates the GPS measurement mode. "2" means two-dimensional measurement and "3" means three-dimensional measurement is in progress.
0x000b
11
GPSInfo
Exif.GPSInfo.GPSDOP
Rational
Indicates the GPS DOP (data degree of precision). An HDOP value is written during two-dimensional measurement, and PDOP during three-dimensional measurement.
0x000c
12
GPSInfo
Exif.GPSInfo.GPSSpeedRef
Ascii
Indicates the unit used to express the GPS receiver speed of movement. "K" "M" and "N" represents kilometers per hour, miles per hour, and knots.
0x000d
13
GPSInfo
Exif.GPSInfo.GPSSpeed
Rational
Indicates the speed of GPS receiver movement.
0x000e
14
GPSInfo
Exif.GPSInfo.GPSTrackRef
Ascii
Indicates the reference for giving the direction of GPS receiver movement. "T" denotes true direction and "M" is magnetic direction.
0x000f
15
GPSInfo
Exif.GPSInfo.GPSTrack
Rational
Indicates the direction of GPS receiver movement. The range of values is from 0.00 to 359.99.
0x0010
16
GPSInfo
Exif.GPSInfo.GPSImgDirectionRef
Ascii
Indicates the reference for giving the direction of the image when it is captured. "T" denotes true direction and "M" is magnetic direction.
0x0011
17
GPSInfo
Exif.GPSInfo.GPSImgDirection
Rational
Indicates the direction of the image when it was captured. The range of values is from 0.00 to 359.99.
0x0012
18
GPSInfo
Exif.GPSInfo.GPSMapDatum
Ascii
Indicates the geodetic survey data used by the GPS receiver. If the survey data is restricted to Japan, the value of this tag is "TOKYO" or "WGS-84".
0x0013
19
GPSInfo
Exif.GPSInfo.GPSDestLatitudeRef
Ascii
Indicates whether the latitude of the destination point is north or south latitude. The ASCII value "N" indicates north latitude, and "S" is south latitude.
0x0014
20
GPSInfo
Exif.GPSInfo.GPSDestLatitude
Rational
Indicates the latitude of the destination point. The latitude is expressed as three RATIONAL values giving the degrees, minutes, and seconds, respectively. If latitude is expressed as degrees, minutes and seconds, a typical format would be dd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format would be dd/1,mmmm/100,0/1.
0x0015
21
GPSInfo
Exif.GPSInfo.GPSDestLongitudeRef
Ascii
Indicates whether the longitude of the destination point is east or west longitude. ASCII "E" indicates east longitude, and "W" is west longitude.
0x0016
22
GPSInfo
Exif.GPSInfo.GPSDestLongitude
Rational
Indicates the longitude of the destination point. The longitude is expressed as three RATIONAL values giving the degrees, minutes, and seconds, respectively. If longitude is expressed as degrees, minutes and seconds, a typical format would be ddd/1,mm/1,ss/1. When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format would be ddd/1,mmmm/100,0/1.
0x0017
23
GPSInfo
Exif.GPSInfo.GPSDestBearingRef
Ascii
Indicates the reference used for giving the bearing to the destination point. "T" denotes true direction and "M" is magnetic direction.
0x0018
24
GPSInfo
Exif.GPSInfo.GPSDestBearing
Rational
Indicates the bearing to the destination point. The range of values is from 0.00 to 359.99.
0x0019
25
GPSInfo
Exif.GPSInfo.GPSDestDistanceRef
Ascii
Indicates the unit used to express the distance to the destination point. "K", "M" and "N" represent kilometers, miles and nautical miles.
0x001a
26
GPSInfo
Exif.GPSInfo.GPSDestDistance
Rational
Indicates the distance to the destination point.
0x001b
27
GPSInfo
Exif.GPSInfo.GPSProcessingMethod
Comment
A character string recording the name of the method used for location finding. The string encoding is defined using the same scheme as UserComment.
0x001c
28
GPSInfo
Exif.GPSInfo.GPSAreaInformation
Comment
A character string recording the name of the GPS area.The string encoding is defined using the same scheme as UserComment.
0x001d
29
GPSInfo
Exif.GPSInfo.GPSDateStamp
Ascii
A character string recording date and time information relative to UTC (Coordinated Universal Time). The format is "YYYY:MM:DD.".
0x001e
30
GPSInfo
Exif.GPSInfo.GPSDifferential
Short
Indicates whether differential correction is applied to the GPS receiver.
0x001f
31
GPSInfo
Exif.GPSInfo.GPSHPositioningError
Rational
This tag indicates horizontal positioning errors in meters.
0xb000
45056
MpfInfo
Exif.MpfInfo.MPFVersion
Ascii
MPF Version
0xb001
45057
MpfInfo
Exif.MpfInfo.MPFNumberOfImages
Undefined
MPF Number of Images
0xb002
45058
MpfInfo
Exif.MpfInfo.MPFImageList
Ascii
MPF Image List
0xb003
45059
MpfInfo
Exif.MpfInfo.MPFImageUIDList
Long
MPF Image UID List
0xb004
45060
MpfInfo
Exif.MpfInfo.MPFTotalFrames
Long
MPF Total Frames
0xb101
45313
MpfInfo
Exif.MpfInfo.MPFIndividualNum
Long
MPF Individual Num
0xb201
45569
MpfInfo
Exif.MpfInfo.MPFPanOrientation
Long
MPFPanOrientation
0xb202
45570
MpfInfo
Exif.MpfInfo.MPFPanOverlapH
Long
MPF Pan Overlap Horizontal
0xb203
45571
MpfInfo
Exif.MpfInfo.MPFPanOverlapV
Long
MPF Pan Overlap Vertical
0xb204
45572
MpfInfo
Exif.MpfInfo.MPFBaseViewpointNum
Long
MPF Base Viewpoint Number
0xb205
45573
MpfInfo
Exif.MpfInfo.MPFConvergenceAngle
Long
MPF Convergence Angle
0xb206
45574
MpfInfo
Exif.MpfInfo.MPFBaselineLength
Long
MPF Baseline Length
0xb207
45575
MpfInfo
Exif.MpfInfo.MPFVerticalDivergence
Long
MPF Vertical Divergence
0xb208
45576
MpfInfo
Exif.MpfInfo.MPFAxisDistanceX
Long
MPF Axis Distance X
0xb209
45577
MpfInfo
Exif.MpfInfo.MPFAxisDistanceY
Long
MPF Axis Distance Y
0xb20a
45578
MpfInfo
Exif.MpfInfo.MPFAxisDistanceZ
Long
MPF Axis Distance Z
0xb20b
45579
MpfInfo
Exif.MpfInfo.MPFYawAngle
Long
MPF Yaw Angle
0xb20c
45580
MpfInfo
Exif.MpfInfo.MPFPitchAngle
Long
MPF Pitch Angle
0xb20d
45581
MpfInfo
Exif.MpfInfo.MPFRollAngle
Long
MPF Roll Angle