Exif File Format

Exif file format http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html

Japanese document Description of Exif file format

Currently, most of new digicam use Exif file format to store images. This specification was made by JEIDA , but there is no open document in internet. So I made tiny description about Exif from some of open documents that can get from internet.

Add: Now we can get official document of Exif2.1 from PIMA 's website.

ISO is now working to build DCF (Design rule for Camera File system) Specification. The entire digicam manufacturer is moving to adopt it and their newest digicam already uses DCF. DCF defines whole file-system of digicam; directory structure, file naming method, character set and file format etc. The file format of DCF is based on Exif2.1 specification.

I believe this document is basically based on Exif2.1/DCF specification, if you have information about 'unknown' item or find errata, please e-mail me, TsuruZoh Tachibanaya , t s u r u z o h @ b a . w a k w a k . tag">c o m

This is a FREE document, you may use this document for any purpose (commercial/non-commercial) of all/part of this document. All trade names mentioned in this document are trademarks or registered trademarks of their respective holders.

TsuruZoh Tachibanaya, t s u r u z o h @ b a . w a k w a k . c o m

http://park2.wakwak.com/~tsuruzoh/

rev. 1.4 Feb.03,2001 rev. 1.3 Sep.09,2000 rev. 1.2 Jul.19,2000 rev. 1.1 Dec.19,1999 rev. 1.0 May.28,1999

Referenced materials

Exif file format written by itojun (Japanese language document) Exif file format written by Mamoru Ohno (Japanese language document) TIFF6.0 Specification written by Adobe TIFF/EP Specification written by ISO TC42 WG18 exifdump program written by Thierry Boush DCF Specification written by ISO TC42 WG18 Exif2.1 Specification written by JEIDA

What is Exif format? JPEG format and Marker Marker used by Exif Exif data structure TIFF Header IFD : Image file directory Data format IFD data structure Thumbnail image JPEG format thumnail TIFF format thumbnail Tag number used by Exif/TIFF IFD0 (IFD of main image) section Exif SubIFD section IFD1 (IFD of thumbnail image) section Misc Tags Appendix 1: MakerNote of Olympus digicams Appendix 2: MakerNote of Nikon digicams Appendix 3: MakerNote of Casio digicams Appendix 4: MakerNote of Fujifilm digicams Appendix 5: MakerNote of Canon digicams History Acknowledgement

What is Exif file format?

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Basically, Exif file format is the same as JPEG file format. Exif inserts some of im age/digicam information data and thumbnail image to JPEG in conformity to JPEG specification. Therefore you can view Exif format image files by JPEG compliant Internet browser/Picture viewer/Photo retouch software etc. as a usual JPEG image files.

JPEG format and Marker

Every JPEG file starts from binary value '0xFFD8', ends by binary value '0xFFD9'. There are several binary 0xFFXX data in JPEG data, they are called as "Marker" , and it means the period of JPEG information data. 0xFFD8 means SOI (Start of image), 0xFFD9 means EOI (End of image). These two special Markers have no data following, the other Markers have data with it. Basic format of Marker is below.

0xFF+Marker #umber(1 byte)+Data size(2 bytes)+Data(n bytes)

Data size (2 Bytes) has "Motorola" byte align, starts from bigger digits. Please notice that "Data" contains Data size descriptor, if there is a Marker like this;

FF C1 00 0C

It means this Marker(0xFFC1) has 0x000C(equal 12)bytes of data. But the data size '12' includes "Data size" descriptor, it follows only 10 bytes of data after 0x000C.

In JPEG format, some of Markers describe data, then SOS (Start of stream) Marker placed. After the SOS marker, JPEG image stream starts and terminated by EOI Marker.

SOI Marker Marker XX size=SSSS Marker YY size=TTTT SOS Marker size=UUUU Image stream EOI Marker FFD8 FFXX SSSS DDDD...... FFYY TTTT DDDD...... FFDA UUUU DDDD.... I I I I.... FFD9

Marker used by Exif

The marker 0xFFE0~0xFFEF is named "Application Marker" , not necessary for decoding JPEG image. They are used by user application. For example, older olympus/canon/casio/agfa digicam use JFIF(JPEG File Interchange Format) for storing images. JFIF uses APP0(0xFFE0) Marker for inserting digicam configuration data and thumbnail image.

Also Exif uses an Application Marker for inserting data, but Exif uses APP1(0xFFE1) Marker to avoid a conflict with JFIF format. Every Exif file formats starts from this format;

SOI Marker APP1 Marker APP1 Data Other Marker FFD8 FFE1 SSSS 457869660000 TTTT...... FFXX SSSS DDDD......

It starts from SOI(0xFFD8) Marker, so it's a JPEG file. Then APP1 Marker follows immediately. All the data of Exif are stored in this APP1 data area. The part of "SSSS" on upper table means the size of APP1 data area (Exif data area). Please notice that the size "SSSS" includes the size of descriptor itself also.

After the "SSSS", APP1 data starts. The first part is a special data to identify whether Exif or not, ASCII character "Exif" and 2bytes of 0x00 are used.

After the APP1 Marker area, the other JPEG Markers follows.

Exif data structure

Roughly structure of Exif data (APP1) is shown as below. This is a case of "Intel" byte aligns and it contains JPEG format thumbnail. As described above, Exif data is starts from ASCII character "Exif" and 2bytes of 0x00, and then Exif data follows. Exif uses TIFF format to store data. For more details of TIFF format, please refer to "TIFF6.0 specification" .

FFE1 APP1 Marker SSSS APP1 Data Size 45786966 0000 Exif Header 49492A00 08000000 TIFF Header XXXX. . . . Directory IFD0 (main image) LLLLLLLL Link to IFD1 XXXX. . . .APP1 Data Data area of IFD0 XXXX. . . . Directory Exif SubIFD 00000000 End of Link XXXX. . . . Data area of Exif SubIFD XXXX. . . . Directory Interoperability IFD 00000000 End of Link

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XXXX. . . . Data area of Interoperability IFD XXXX. . . . Directory Makernote IFD 00000000 End of Link XXXX. . . . Data area of Makernote IFD XXXX. . . . Directory IFD1(thumbnail image) 00000000 End of Link XXXX. . . . Data area of IFD1 FFD8XXXX. . . XXXXFFD9 Thumbnail image

Structure of TIFF header

First 8bytes of TIFF format are TIFF header. First 2bytes defines byte align of TIFF data. If it is 0x4949="I I", it means "Intel" type byte align. If it is 0x4d4d="MM", it means "Motorola" type byte align. For example, value '305,419,896' is noted as 0x12345678 by sixteenth system. At the Motorola align, it is stored as 0x12,0x34,0x56,0x78. If it's Intel align, it is stored as 0x78,0x56,0x34,0x12. It seems that most of digicam uses Intel align. Ricoh uses Motorola align. Sony uses Intel align except D700. Kodak DC200/210/240 use Motorola aligns, but DC220/260 use Intel aligns though they are using PowerPC! Therefore when we need the value of Exif data, we MUST check byte align every time. Though JPEG data uses Motorola align only, Exif allows both alignments. I can't understand why Exif didn't fix a byte align to Motorola.

Next 2bytes are always 2bytes-length value of 0x002A. If the data uses Intel align, next 2bytes are "0x2a,0x00". If it uses Motorola, they are "0x00,0x2a". The last 4bytes of TIFF header are an offset to the first IFD(Image File Directory, described in next chapter). Includes this offset, all the offset value used in TIFF format counts offset bytes from the first of TIFF header("I I" or "MM"). Usually the first IFD starts immediately next to TIFF header, so this offset has value '0x00000008'.

Byte align TAG Mark Offset to first IFD "I I" or "MM" 0x002a 0x00000008

IFD : Image file directory

Next to TIFF header, there is the first IFD:Image File Directory. It contains image information data. At the chart below, the first 2bytes('EEEE') means the number of directory entry contains in this IFD. Then directory entry (12bytes per entry) follows. After last directory entry, there is a 4bytes of data('LLLLLLLL' at the chart), it means an offset to next IFD. If its value is '0x00000000', it means this is the last IFD and there is no linked IFD.

EEEE No. of directory entry TTTT ffff NNNNNNNN DDDDDDDD Entry 0 TTTT ffff NNNNNNNN DDDDDDDD Entry 1 ...... TTTT ffff NNNNNNNN DDDDDDDD Entry EEEE-1 LLLLLLLL Offset to next IFD

'TTTT'(2bytes) of above chart is Tag number, this shows a kind of data. 'ffff'(2bytes) is data format, 'NNNNNNNN'(4bytes) is number of components. 'DDDDDDDD'(4bytes) contains a data value or offset to data value.

Data format

Data format ('ffff' at the above chart) is defined as below. "rational" means a fractional value, it contains 2-signed/unsigned long integer values, and the first represents the numerator, and the second, the denominator. Value 1 2 3 4 5 6 Format unsigned byte ascii strings unsigned short unsigned long unsigned rational signed byte Bytes/component1 1 2 4 8 1 Value 7 8 9 10 11 12 Format undefined signed short signed long signed rational single float double float Bytes/component1 2 4 8 4 8

You can get the total data byte length by multiplies a 'bytes/components' value (see above chart) by number of components stored 'NNNNNNNN' area. If total data length is less than 4bytes, 'DDDDDDDD' contains the value of that Tag. If its size is over 4bytes, 'DDDDDDDD' contains the offset to data stored address.

IFD data structure

At Exif format, the first IFD is IFD0(IFD of main image), then it links to IFD1(IFD of thumbnail image) and IFD link is terminated. But IFD0/IFD1 doesn't contain any digicam's information such as shutter speed, focal length etc. IFD0 always contains special Tag Exif Offset (0x8769) , it shows an offset to Exif SubIFD . Exif SubIFD is IFD formatted data also, it contains digicam's information.

In case of Extended Exif format (Exif2.1/DCF), Exif SubIFD contains special Tag Exif Interoperability Offset (0xa005) . It also points to the

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Interoperability IFD. By the DCF specification, this tag is mandatory and both SubIF D (main image IFD) and IFD1 (thumbnail image IFD) may have Interoperability IFD. In usual, only main image have this tag.

And some of digicam uses IFD data format for Makernote; Maker-specific magic number area. It's very hard to decision whether makernote is IFD format or not, be careful to coding program. See Appendix for information of Makernote. 0000: 49 49 2A 00 08 00 00 00-02 00 1A 01 05 00 01 00 0010: 00 00 26 00 00 00 69 87-04 00 01 00 00 00 11 02 0020: 00 00 40 00 00 00 48 00-00 00 01 00 00 00

If the first part of TIFF data is above, it can read as;

The first 2bytes are "I I", byte align is 'Intel'. Address 0x0004~0x0007 is 0x08000000, IFD0 starts from address '0x0008' Address 0x0008~0x0009 is 0x0200, number of directory entry of IFD0 is '2'. Address 0x000a~0x000b is 0x1A01, it means this is an XResolution(0x011A) Tag, it contains a horizontal resolution of image. Address 0x000c~0x000d is 0x0500, format of this value is unsigned rational(0x0005). Address 0x000e~0x0011 is 0x01000000, number of components is '1'. Unsigned rational's data size is 8bytes/components, so total data length is 1x8=8bytes. Total data length is larger than 4bytes, so next 4bytes contains an offset to data. Address 0x0012~0x0015 is 0x26000000, XResolution data is stored to address 0x0026 Address 0x0026~0x0029 is 0x48000000, numerator is 72, address 0x002a~0x002d is 0x0100000000, denominator is '1'. So the value of XResoultion is 72/1. Address0x0016~0x0017 is 0x6987, next Tag is ExifOffset(0x8769). Its value is an offset to Exif SubIFD Data format is 0x0004, unsigned long integer. This Tag has one component. Unsigned long integer's data size is 4bytes/components, so total data size is 4bytes. Total data size is equal to 4bytes, next 4bytes contains the value of Exif SubIFD offset. Address 0x001e~0x0021 is 0x11020000, Exif SubIFD starts from address '0x0211'. This is the last directory entry, next 4bytes shows an offset to next IFD. Address 0x0022~0x0025 is 0x40000000, next IFD starts from address '0x0040'

Thumbnail image

Exif format contains thumbnail of image (except Ricoh RDC-300Z). Usually it is located next to the IFD1. There are 3 formats for thumbnails; JPEG format(JPEG uses YCbCr), RGB TIFF format, YCbCr TIFF format. It seems that JPEG format and 160x120 pixels of size are recommended thumbnail format for Exif2.1 or later. By the DCF specification, thumbnail image MUST use JPEG format and image size is fixed to 160x120 pixels.

JPEG format thumbnail

If the value of Compression(0x0103) Tag in IFD1 is '6', thumbnail image format is JPEG. Most of Exif image uses JPEG format for thumbnail. In that case, you can get offset of thumbnail from JpegIFOffset(0x0201) Tag in IFD1, size of thumbnail from JpegIFByteCount(0x0202) Tag. Data format is ordinary JPEG format, starts from 0xFFD8 and ends by 0xFFD9.

TIFF format thumbnail

If the value of Compression(0x0103) Tag in IFD1 is '1', thumbnail image format is no compression(called TIFF image). Start point of thumbnail data is StripOffset(0x0111) Tag, size of thumbnail is the sum of StripByteCounts(0x0117) Tag.

If thumbnail uses no compression and PhotometricInterpretation(0x0106) Tag in IFD1 has a value '2', thumbnail uses RGB format. In that case, you can see thumbnail image by simply copy data to computer's RGB format(such as BMP format, or copy to VRAM directory). Kodak DC-210/220/260 uses this format. Be mention that at TIFF stores pixel data as 'RGB' order, but BMP stores 'BGR' order. If that tag has a value '6', thumbnail uses YCbCr format. If you want to see thumbnail, you must convert it to RGB. Ricoh RDC4200/4300, Fuji DS-7/300 and DX-5/7/9 use this format(newer RDC5000/MX-X00 series use JPEG). Next section is brief description to conversion of Fuji DS's thumbnail. For more details, refer to TIFF6.0 specification .

At DX-5/7/9, YCbCrSubsampling(0x0212) has values of '2,1', PlanarConfiguration(0x011c) has a value '1'. So the data align of this image is below.

Y(0,0),Y(1,0),Cb(0,0),Cr(0,0), Y(2,0),Y(3,0),Cb(2,0),Cr(3.0), Y(4,0),Y(5,0),Cb(4,0),Cr(4,0). . . .

The numeric in parenthesis is pixel coordinates. DX series' YCbCrCoefficients(0x0211) has values '0.299/0.587/0.114', ReferenceBlackWhite(0x0214) has values '0,255,128,255,128,255'. Therefore to convert from Y/Cb/Cr to RGB is;

B(0,0)=(Cb-128)*(2-0.114*2)+Y(0,0) R(0,0)=(Cr-128)*(2-0.299*2)+Y(0,0) G(0,0)=(Y(0,0)-0.114*B(0,0)-0.299*R(0,0))/0.587

Horizontal subsampling is a value '2', so you can calculate B(1,0)/R(1,0)/G(1,0) by using the Y(1,0) and Cr(0,0)/Cb(0,0). Repeat this conversion by value of ImageWidth(0x0100) and ImageLength(0x0101).

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Tag number used by Exif/TIFF

Tag numbers used by Exif/TIFF are shown as below. If the Tag has upper limit of components number, CompoNo column has numeric value. If it has no value, there is no limitation.

Tags used by IFD0 (main image) Tag Tag Name Format CompoNo Desc. No. 0x010e ImageDescription ascii string Describes image. Two-byte character code such as Chinese/Korean/Japanese cannot be used. 0x010f Make ascii string Shows manufacturer of digicam. In the Exif standard, this tag is optional, but it is mandatory for DCF. Shows model number of digicam. In the Exif standard, this tag is optional, but it is mandatory for 0x0110 Model ascii string DCF. The orientation of the camera relative to the scene, when the image was Value 0th Row 0th Column captured. The relation of the '0th row' and '0th column' to visual 1 top left side position is shown as right. 2 top right side 3 bottom right side unsigned 0x0112 Orientation 1 4 bottom left side short 5 left side top 6 right side top 7 right side bottom 8 left side bottom unsigned 0x011a XResolution 1 rational Display/Print resolution of image. Default value is 1/72inch, but it has no mean because personal unsigned computer doesn't use this value to display/print out. 0x011b YResolution 1 rational unsigned Unit of XResolution(0x011a)/YResolution(0x011b). '1' means no-unit, '2' means inch, '3' means 0x0128 ResolutionUnit 1 short centimeter. Default value is '2'(inch). 0x0131 Software ascii string Shows firmware(internal software of digicam) version number. Date/Time of image was last modified. Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 0x0132 DateTime ascii string 20 20bytes. If clock has not set or digicam doesn't have clock, the field may be filled with spaces. In usual, it has the same value of DateTimeOriginal(0x9003) unsigned Defines chromaticity of white point of the image. If the image uses CIE Standard Illumination 0x013e WhitePoint 2 rational D65(known as international standard of 'daylight'), the values are '3127/10000,3290/10000'. unsigned Defines chromaticity of the primaries of the image. If the image uses CCIR Recommendation 709 0x013f PrimaryChromaticities 6 rational primaries, values are '640/1000,330/1000,300/1000,600/1000,150/1000,0/1000'. unsigned When image format is YCbCr, this value shows a constant to translate it to RGB format. In usual, 0x0211 YCbCrCoefficients 3 rational values are '0.299/0.587/0.114'. When image format is YCbCr and uses 'Subsampling'(cropping of chroma data, all the digicam do unsigned 0x0213 YCbCrPositioning 1 that), defines the chroma sample point of subsampling pixel array. '1' means the center of pixel array, short '2' means the datum point. Shows reference value of black point/white point. In case of YCbCr format, first 2 show black/white unsigned 0x0214 ReferenceBlackWhite 6 of Y, next 2 are Cb, last 2 are Cr. In case of RGB format, first 2 show black/white of R, next 2 are G, rational last 2 are B. 0x8298 Copyright ascii string Shows copyright information unsigned 0x8769 ExifOffset 1 Offset to Exif Sub IFD long

Tags used by Exif SubIFD Tag Tag Name Format CompoNo Desc. No. unsigned 0x829a ExposureTime 1 Exposure time (reciprocal of shutter speed). Unit is second. rational unsigned 0x829d FNumber 1 The actual F-number(F-stop) of lens when the image was taken. rational Exposure program that the camera used when image was taken. '1' means manual control, '2' unsigned 0x8822 ExposureProgram 1 program normal, '3' aperture priority, '4' shutter priority, '5' program creative (slow program), '6' short program action(high-speed program), '7' portrait mode, '8' landscape mode. unsigned 0x8827 ISOSpeedRatings 2 CCD sensitivity equivalent to Ag-Hr film speedrate. short Exif version number. Stored as 4bytes of ASCII character. If the picture is based on Exif V2.1, 0x9000 ExifVersion undefined 4 value is "0210". Since the type is 'undefined', there is no NULL(0x00) for termination.

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Date/Time of original image taken. This value should not be modified by user program. Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes. If clock has not set or digicam 0x9003 DateTimeOriginal ascii string 20 doesn't have clock, the field may be filled with spaces. In the Exif standard, this tag is optional, but it is mandatory for DCF. Date/Time of image digitized. Usually, it contains the same value of DateTimeOriginal(0x9003). Data format is "YYYY:MM:DD HH:MM:SS"+0x00, total 20bytes. If clock has not set or digicam 0x9004 DateTimeDigitized ascii string 20 doesn't have clock, the field may be filled with spaces. In the Exif standard, this tag is optional, but it is mandatory for DCF. Shows the order of pixel data. Most of case '0x04,0x05,0x06,0x00' is used for RGB-format and 0x9101 ComponentsConfiguration undefined '0x01,0x02,0x03,0x00' for YCbCr-format. 0x00:does not exist, 0x01:Y, 0x02:Cb, 0x03:Cr, 0x04:Red, 0x05:Green, 0x06:Bllue. unsigned 0x9102 CompressedBitsPerPixel 1 The average compression ratio of JPEG (rough estimate). rational Shutter speed by APEX value. To convert this value to ordinary 'Shutter Speed'; calculate this signed 0x9201 ShutterSpeedValue 1 value's power of 2, then reciprocal. For example, if the ShutterSpeedValue is '4', shutter speed is rational 1/(2 4)=1/16 second. The actual aperture value of lens when the image was taken. Unit is APEX. To convert this value unsigned 0x9202 ApertureValue 1 to ordinary F-number(F-stop), calculate this value's power of root 2 (=1.4142). For example, if rational the ApertureValue is '5', F-number is 1.4142 5 = F5.6. Brightness of taken subject, unit is APEX. To calculate Exposure(Ev) from BrigtnessValue(Bv), signed you must add SensitivityValue(Sv). 0x9203 BrightnessValue 1 rational Ev=Bv+Sv Sv=log 2(ISOSpeedRating/3.125) ISO100:Sv=5, ISO200:Sv=6, ISO400:Sv=7, ISO125:Sv=5.32. signed 0x9204 ExposureBiasValue 1 Exposure bias(compensation) value of taking picture. Unit is APEX(EV). rational unsigned Maximum aperture value of lens. You can convert to F-number by calculating power of root 2 0x9205 MaxApertureValue 1 rational (same process of ApertureValue:0x9202). signed 0x9206 SubjectDistance 1 Distance to focus point, unit is meter. rational unsigned Exposure metering method. '0' means unknown, '1' average, '2' center weighted average, '3' spot, 0x9207 MeteringMode 1 short '4' multi-spot, '5' multi-segment, '6' partial, '255' other. Light source, actually this means white balance setting. '0' means unknown, '1' daylight, '2' unsigned 0x9208 LightSource 1 fluorescent, '3' tungsten, '10' flash, '17' standard light A, '18' standard light B, '19' standard light C, short '20' D55, '21' D65, '22' D75, '255' other. unsigned '0' means flash did not fire, '1' flash fired, '5' flash fired but strobe return light not detected, '7' 0x9209 Flash 1 short flash fired and strobe return light detected. unsigned 0x920a FocalLength 1 Focal length of lens used to take image. Unit is millimeter. rational Maker dependent internal data. Some of maker such as Olympus/Nikon/Sanyo etc. uses IFD 0x927c MakerNote undefined format for this area. Stores user comment. This tag allows to use two-byte character code or unicode. First 8 bytes describe the character code. 'JIS' is a Japanese character code (known as Kanji). '0x41,0x53,0x43,0x49,0x49,0x00,0x00,0x00':ASCII 0x9286 UserComment undefined '0x4a,0x49,0x53,0x00,0x00,0x00,0x00,0x00':JIS '0x55,0x4e,0x49,0x43,0x4f,0x44,0x45,0x00':Unicode '0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00':Undefined 0x9290 SubsecTime ascii string Some of digicam can take 2~30 pictures per second, but DateTime/DateTimeOriginal /DateTimeDigitized tag can't record the sub-second time. SubsecTime tag is used to record it. 0x9291 SubsecTimeOriginal ascii string For example, DateTimeOriginal = "1996:09:01 09:15:30", SubSecTimeOriginal = "130", 0x9292 SubsecTimeDigitized ascii string Combined original time is "1996:09:01 09:15:30.130" Stores FlashPix version. If the image data is based on FlashPix formar Ver.1.0, value is "0100". 0xa000 FlashPixVersion undefined 4 Since the type is 'undefined', there is no NULL(0x00) for termination. unsigned Defines Color Space. DCF image must use sRGB color space so value is always '1'. If the picture 0xa001 ColorSpace 1 short uses the other color space, value is '65535':Uncalibrated. unsigned 0xa002 ExifImageWidth 1 short/long Size of main image. unsigned 0xa003 ExifImageHeight 1 short/long 0xa004 RelatedSoundFile ascii string If this digicam can record audio data with image, shows name of audio data. Extension of "ExifR98", detail is unknown. This value is offset to IFD format data. Currently unsigned 0xa005 ExifInteroperabilityOffset 1 there are 2 directory entries, first one is Tag0x0001, value is "R98", next is Tag0x0002, value is long "0100". unsigned Pixel density at CCD's position. If you have MegaPixel digicam and take a picture by lower 0xa20e FocalPlaneXResolution 1 rational resolution(e.g.VGA mode), this value is re-sampled by picture resolution. In such case,

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unsigned 0xa20f FocalPlaneYResolution 1 FocalPlaneResolution is not same as CCD's actual resolution. rational Unit of FocalPlaneXResoluton/FocalPlaneYResolution. '1' means no-unit, '2' inch, '3' centimeter. unsigned 0xa210 FocalPlaneResolutionUnit 1 Note:Some of Fujifilm's digicam(e.g.FX2700,FX2900,Finepix4700Z/40i etc) uses value '3' so it short must be 'centimeter', but it seems that they use a '8.3mm?'(1/3in.?) to their ResolutionUnit. Fuji's BUG? Finepix4900Z has been changed to use value '2' but it doesn't match to actual value also. unsigned Same as ISOSpeedRatings(0x8827) but data type is unsigned rational. Only Kodak's digicam uses 0xa215 ExposureIndex 1 rational this tag instead of ISOSpeedRating, I don't know why(historical reason?). unsigned Shows type of image sensor unit. '2' means 1 chip color area sensor, most of all digicam use this 0xa217 SensingMethod 1 short type. 0xa300 FileSource undefined 1 Indicates the image source. Value '0x03' means the image source is digital still camera. 0xa301 SceneType undefined 1 Indicates the type of scene. Value '0x01' means that the image was directly photographed. Indicates the Color filter array(CFA) geometric pattern. Length Type Meaning 2 short Horizontal repeat pixel unit = n 2 short Vertical repeat pixel unit = m 1 byte CFA value[0,0] ::: 1 byte CFA value[n-1,0] 1 byte CFA value[0,1] 0xa302 CFAPattern undefined ::: 1 byte CFA value[n-1,m-1]

The relation of filter color to CFA value is shown below. Filter Color Red Green Blue Cyan Magenta Yellow White CFA value 0 1 2 3 4 5 6

RG For example, ordinary RGB filter uses the repetition of left chart, the value is '0x0002,0x0002,0x00,0x01,0x01,0x02'. GB

Tags used by Interoperability IFD Tag Tag Name Format CompoNo Desc. No. If this IFD is main image's IFD and the file content is equivalent to ExifR98 v1.0, the value is 0x0001 InteroperabilityIndex Ascii string 4 "R98". If thumbnail image's, value is "THM". 0x0002 InteroperabilityVersion Undefined 4 Records the interoperability version. "0100" means version 1.00. 0x1000 RelatedImageFileFormat Ascii string any Records the file format of image file. Value is ascii string (e.g. "Exif JPEG Ver. 2.1"). Short or 0x1001 RelatedImageWidth 1 Long Records the image size. Short or 0x1001 RelatedImageLength 1 Long

Tags used by IFD1 (thumbnail image) Tag Tag Name Format CompoNo Desc. No. unsigned 0x0100 ImageWidth 1 short/long Shows size of thumbnail image. unsigned 0x0101 ImageLength 1 short/long unsigned When image format is no compression, this value shows the number of bits per component for 0x0102 BitsPerSample 3 short each pixel. Usually this value is '8,8,8' unsigned 0x0103 Compression 1 Shows compression method. '1' means no compression, '6' means JPEG compression. short unsigned Shows the color space of the image data components. '1' means monochrome, '2' means RGB, '6' 0x0106 PhotometricInterpretation 1 short means YCbCr.

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unsigned When image format is no compression, this value shows offset to image data. In some case image 0x0111 StripOffsets short/long data is striped and this value is plural. unsigned When image format is no compression, this value shows the number of components stored for 0x0115 SamplesPerPixel 1 short each pixel. At color image, this value is '3'. When image format is no compression and image has stored as strip, this value shows how many unsigned 0x0116 RowsPerStrip 1 rows stored to each strip. If image has not striped, this value is the same as short/long ImageLength(0x0101). When image format is no compression and stored as strip, this value shows how many bytes used unsigned 0x0117 StripByteConunts for each strip and this value is plural. If image has not stripped, this value is single and means short/long whole data size of image. unsigned 0x011a XResolution 1 rational Display/Print resolution of image. Large number of digicam uses 1/72inch, but it has no mean unsigned because personal computer doesn't use this value to display/print out. 0x011b YResolution 1 rational When image format is no compression YCbCr, this value shows byte aligns of YCbCr data. If unsigned 0x011c PlanarConfiguration 1 value is '1', Y/Cb/Cr value is chunky format, contiguous for each subsampling pixel. If value is short '2', Y/Cb/Cr value is separated and stored to Y plane/Cb plane/Cr plane format. unsigned 0x0128 ResolutionUnit 1 Unit of XResolution(0x011a)/YResolution(0x011b). '1' means inch, '2' means centimeter. short unsigned 0x0201 JpegIFOffset 1 When image format is JPEG, this value show offset to JPEG data stored. long unsigned 0x0202 JpegIFByteCount 1 When image format is JPEG, this value shows data size of JPEG image. long unsigned When image format is YCbCr, this value shows constants to translate it to RGB format. In usual, 0x0211 YCbCrCoefficients 3 rational '0.299/0.587/0.114' are used. When image format is YCbCr and uses subsampling(cropping of chroma data, all the digicam do unsigned 0x0212 YCbCrSubSampling 2 that), this value shows how many chroma data subsampled. First value shows horizontal, next short value shows vertical subsample rate. When image format is YCbCr and uses 'Subsampling'(cropping of chroma data, all the digicam unsigned 0x0213 YCbCrPositioning 1 do that), this value defines the chroma sample point of subsampled pixel array. '1' means the short center of pixel array, '2' means the datum point(0,0). Shows reference value of black point/white point. In case of YCbCr format, first 2 show unsigned 0x0214 ReferenceBlackWhite 6 black/white of Y, next 2 are Cb, last 2 are Cr. In case of RGB format, first 2 show black/white of rational R, next 2 are G, last 2 are B.

Misc Tags Tag No. Tag Name Format CompoNo Desc. 0x00fe NewSubfileType unsigned long 1 0x00ff SubfileType unsigned short 1 0x012d TransferFunction unsigned short 3 0x013b Artist ascii string 0x013d Predictor unsigned short 1 0x0142 TileWidth unsigned short 1 0x0143 TileLength unsigned short 1 0x0144 TileOffsets unsigned long 0x0145 TileByteCounts unsigned short 0x014a SubIFDs unsigned long 0x015b JPEGTables undefined 0x828d CFARepeatPatternDim unsigned short 2 0x828e CFAPattern unsigned byte 0x828f BatteryLevel unsigned rational 1 0x83bb IPTC/NAA unsigned long 0x8773 InterColorProfile undefined 0x8824 SpectralSensitivity ascii string 0x8825 GPSInfo unsigned long 1 0x8828 OECF undefined 0x8829 Interlace unsigned short 1 0x882a TimeZoneOffset signed short 1 0x882b SelfTimerMode unsigned short 1 0x920b FlashEnergy unsigned rational 1

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0x920c SpatialFrequencyResponse undefined 0x920d Noise undefined 0x9211 ImageNumber unsigned long 1 0x9212 SecurityClassification ascii string 1 0x9213 ImageHistory ascii string 0x9214 SubjectLocation unsigned short 4 0x9215 ExposureIndex unsigned rational 1 0x9216 TIFF/EPStandardID unsigned byte 4 0xa20b FlashEnergy unsigned rational 1 0xa20c SpatialFrequencyResponse unsigned short 1 0xa214 SubjectLocation unsigned short 1

Appendix 1: Maker#ote of Olympus Digicams

The data below is analyzed at Olympus D450Z(C-920Z) by Peter Esherick.

MakerNote of Olympus Digicam starts from ASCII string "OLYMP". Data format is the same as IFD, but it starts from offset 0x07. Example of actual data structure is shown below. :0000: 4F 4C 59 4D 50 00 01 00-0B 00 00 02 04 00 03 00 OLYMP...... :0010: 00 00 0E 04 00 00 01 02-03 00 01 00 00 00 03 00 ......

Tag Tag Name Format CompoNo Value No. Shows picture taking mode. First value means 0=normal, 1=unknown, 2=fast, 3=panorama. Second Unsigned 0x0200 SpecialMode 3 value means sequence number, third value means panorama direction, 1=left to right, 2=right to left, Long 3=bottom to top, 4=top to bottom. Unsigned 0x0201 JpegQual 1 Shows JPEG quality. 1=SQ,2=HQ,3=SHQ. Short Unsigned 0x0202 Macro 1 Shows Macro mode or not. 0=normal, 1=macro. Short Unsigned 0x0203 Unknown 1 Unknown Short Unsigned 0x0204 DigiZoom 1 Shows Digital Zoom ratio. 0=normal, 2=digital 2x zoom. Rational Unsigned 0x0205 Unknown 1 Unknown Rational 0x0206 Unknown Signed Short 6 Unknown 0x0207 SoftwareRelease Ascii string 5 Shows Firmware version. Contains ASCII format data such as [PictureInfo]. This is the same data format of older Olympus 0x0208 PictInfo Ascii string 52 digicam that not used Exif data format (C1400/C820/D620/D340 etc). 0x0209 CameraID Undefined 32 Contains CameraID data, which is user changeable by some utilities Unsigned 0x0f00 DataDump 30 Unknown Long

Appendix 2: Maker#ote of #ikon

There are 2 formats of Nikon's MakerNote. MakerNote of E700/E800/E900/E900S/E910/E950 starts from ASCII string "Nikon". Data format is the same as IFD, but it starts from offset 0x08. This is the same as Olympus except start string. Example of actual data structure is shown below. :0000: 4E 69 6B 6F 6E 00 01 00-05 00 02 00 02 00 06 00 Nikon...... :0010: 00 00 EC 02 00 00 03 00-03 00 01 00 00 00 06 00 ......

Tag Tag Name Format CompoNo Value No. 0x0002 Unknown Ascii string 6 Unknown. E900/E900S/E910:"09.41", others:"08.00". Shows quality setting. At E900, 1:VGA Basic, 2:VGA Normal, 3:VGA Fine, 4:SXGA Basic, 5:SXGA 0x0003 Quality Unsigned short 1 Normal, 6:SXGA Fine 0x0004 Color Mode Unsigned short 1 1:Color, 2:Monochrome.

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Image 0x0005 Unsigned short 1 0:Normal, 1:Bright+, 2:Bright-, 3:Contrast+, 4:Contrast-. Adjustment 0x0006 CCD Sensitivity Unsigned short 1 0:ISO80, 2:ISO160, 4:ISO320, 5:ISO100 0x0007 White balance Unsigned short 1 0:Auto, 1:Preset, 2:Daylight, 3:Incandescense, 4:Fluorescence, 5:Cloudy, 6:SpeedLight Unsigned 0x0008 Focus 1 If infinite focus, value is '1/0'. rational 0x0009 Unknown Ascii string 20 Unknown Unsigned 0x000a Digital Zoom 1 '160/100' means 1.6x digital zoom, '0/100' means no digital zoom (optical zoom only). rational 0x000b Converter Unsigned short 1 If Fisheye Converter is used, value is '1'. 0x0f00 Unknown Unsigned long 25~30 Unknown

At E990, there is no Ascii string. As like the usual IFD (e.g. IFD0, SubIFD), IFD starts from the first byte of data. Nikon D1 also uses this format. Example of actual data structure is shown below. :0000: 10 00 01 00 07 00 04 00-00 00 00 01 00 00 02 00 ...... :0010: 03 00 02 00 00 00 00 00-64 00 03 00 02 00 06 00 ...... d......

The data below is analyzed by Max Lyons .

Tag No. Tag Name Format CompoNo Value 0x0001 Unknown Undefined 4 Unknown. Always "0100". version? 0,100=ISO 100 0,200=ISO200 0x0002 ISO Setting Unsigned short 2 0,400=ISO400 etc. 0x0003 Color Mode Ascii string varies "COLOR", "B&W" 0x0004 Quality Ascii string varies "NORMAL", "FINE", "BASIC" 0x0005 Whitebalance Ascii string varies "AUTO", "WHITE PRESET" etc. 0x0006 Image Sharpening Ascii string varies "AUTO", "HIGH" etc. 0x0007 Focus Mode Ascii string varies "AF-S" means Single AF, "AF-C" means Continuous AF. 0x0008 Flash Setting Ascii string varies "NORMAL", "RED-EYE" etc. 0x000a Unknown Unsigned rational 1 Unknown, Always '8832/1000'? 0x000f ISO Selection Ascii string varies "MANUAL":User selected, "AUTO":Automatically selected. 0x0080 Image Adjustment Ascii string varies "AUTO", "NORMAL", "CONTRAST(+)" etc. 0x0082 Adapter Ascii string varies "OFF", "FISHEYE 2", "WIDE ADAPTER" etc. 0x0085 Manual Focus Distance Unsigned rational 1 Distance in Meters if focus was manually selected, otherwise 0 0x0086 Digital Zoom Unsigned rational 1 '100/100' means no digital zoom (optical zoom only), '140/100' means 1.4x digital zoom. 0x0088 AF Focus Position Undefined 4 '0,0,0,0':Center, '0,1,0,0':Top, '0,2,0,0':Bottom, '0,3,0,0':Left, '0,4,0,0':right 0x0010 Data Dump Undefined 174 Unknown.

Appendix 3: Maker#ote of Casio

Casio started to use Exif format from QV2000/QV8000. Casio's MakerNote format is the same as usual IFD (e.g. IFD0, SubIFD0). Example of actual data structure is shown below. :0000: 00 14 00 01 00 03 00 00-00 01 00 0A 00 00 00 02 ...... :0010: 00 03 00 00 00 01 00 03-00 00 00 03 00 03 00 00 ......

The data below is analyzed by Eckhard Henkel .

Tag No. Tag Name Format CompoNo Value 0x0001 RecordingMode Unsigned Short 1 1:Single Shutter, 2:Panorama, 3:Night Scene, 4:Portrait, 5:Landscape 0x0002 Quality Unsigned Short 1 1:Economy, 2:Normal, 3:Fine 0x0003 Focusing Mode Unsigned Short 1 2:Macro, 3:Auto Focus, 4:Manual Focus, 5:Infinity 0x0004 Flash Mode Unsigned Short 1 1:Auto, 2:On, 3:Off, 4:Red Eye Reduction 0x0005 Flash Intensity Unsigned Short 1 11:Weak, 13:Normal, 15:Strong 0x0006 Object distance Unsigned Long 1 Object distance in [mm] 0x0007 White Balance Unsigned Short 1 1:Auto, 2:Tungsten, 3:Daylight, 4:Fluorescent, 5:Shade, 129:Manual 0x0008 Unknown Unsigned short 1 Unknown

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0x0009 Unknown Unsigned short 1 Unknown 0x000a Digital Zoom Unsigned Long 1 0x10000(65536):'Off', 0x10001(65537):'2X Digital Zoom' 0x000b Sharpness Unsigned Short 1 0:Normal, 1:Soft, 2:Hard 0x000c Contrast Unsigned Short 1 0:Normal, 1:Low, 2:High 0x000d Saturation Unsigned Short 1 0:Normal, 1:Low, 2:High 0x000e Unknown Unsigned short 1 Unknown 0x000f Unknown Unsigned short 1 Unknown 0x0010 Unknown Unsigned short 1 Unknown 0x0011 Unknown Unsigned long 1 Unknown 0x0012 Unknown Unsigned short 1 Unknown 0x0013 Unknown Unsigned short 1 Unknown QV3000: 64:Normal, 125:+1.0, 250:+2.0, 244:+3.0 0x0014 CCD Sensitivity Unsigned short 1 QV8000/2000: 80:Normal, 100:High

Appendix 4: Maker#ote of Fujifilm

Fujifilm's digicam added the MakerNote tag from the Year2000's model (e.g.Finepix1400,Finepix4700). It uses IFD format and start from ASCII character 'FUJIFILM', and next 4 bytes(value 0x000c) points the offset to first IFD entry. Example of actual data structure is shown below. :0000: 46 55 4A 49 46 49 4C 4D-0C 00 00 00 0F 00 00 00 :0000: FUJIFILM...... :0010: 07 00 04 00 00 00 30 31-33 30 00 10 02 00 08 00 :0010: ...... 0130......

There are two big differences to the other manufacturers.

Fujifilm's Exif data uses Motorola align, but MakerNote ignores it and uses Intel align. The other manufacturer's MakerNote counts the "offset to data" from the first byte of TIFF header (same as the other IFD), but Fujifilm counts it from the first byte of MakerNote itself.

I think it's a BUG, but it can't be helped now... The data below is analyzed at Fujifilm FinePix4900Z.

Tag Tag Name Format CompoNo Value No. 0x0000 Version Undefined 4 Version of MakerNote information. At present, value is "0130". 0x1000 Quality Ascii string 8 Quality setting. Ascii string "BASIC","NORMAL","FINE" Unsigned 0x1001 Sharpness 1 Sharpness setting. 1or2:soft, 3:normal, 4or5:hard. Short White balance setting. 0:Auto, 256:Daylight, 512:Cloudy, 768:DaylightColor-fluorescence, Unsigned 0x1002 White Balance 1 769:DaywhiteColor-fluorescence, 770:White-fluorescence, 1024:Incandenscense, 3840:Custom white Short balance. Unsigned 0x1003 Color 1 Chroma saturation setting. 0:normal(STD), 256:High, 512:Low(ORG). Short Unsigned 0x1004 Tone 1 Contrast setting. 0:normal(STD), 256:High(HARD), 512:Low(ORG). Short Unsigned 0x1010 Flash Mode 1 Flash firing mode setting. 0:Auto, 1:On, 2:Off, 3:Red-eye reduction. Short Signed Flash firing strength compensation setting. Unit is APEX(EV) and value is -6/10, -3/10, 0/10, 3/10, 6/10 0x1011 Flash Strength 1 Rational etc. Unsigned 0x1020 Macro 1 Macro mode setting. 0:Off, 1:On. Short Unsigned 0x1021 Focus mode 1 Focusing mode setting. 0:Auto focus, 1:Manual focus. short Unsigned 0x1030 SlowSync. 1 Slow synchro mode setting. 0:Off, 1:On. short Unsigned Picture mode setting. 0:Auto, 1:Portrait scene, 2:Landscape scene, 4:Sports scene, 5:Night scene, 0x1031 Picture Mode 1 short 6:Program AE, 256:Aperture prior AE, 512:Shutter prior AE, 768:Manual exposure. Unsigned 0x1032 unknown 1 Unknown Short Unsigned 0x1100 ContTake/Bracket 1 Continuous taking or auto bracketting mode setting. 0:off, 1:on. Short Unsigned 0x1200 unknown 1 Unknown Short

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Unsigned 0x1300 Blur warning 1 Blur warning status. 0:No blur warning, 1:Blur warning. Short Unsigned 0x1301 Focus warning 1 Auto Focus warning status. 0:Auto Focus good, 1:Out of focus. short Unsigned 0x1302 AE warning 1 Auto Exposure warning status. 0:AE good, 1:Over exposure (>1/1000s,F11). short

Appendix 5: Maker#ote of Canon

The data below was primarily analysed by David Burren and the master version of this information is available at: http://www.burren.cx/david/canon.html . Please send any updates to David . This document is based on his Rev.1.11(2001/01/30) of document.

Canon's MakerNote data is in IFD format, starting at offset 0.

Some of these tags and fields are only produced on cameras such as the EOS D30, but (to current observation) all this is valid for all Canon digicams (at least since the A50). If the tag is not found, or is shorter than shown here, it simply means that data is not supported by that camera.

Tag Tag #ame Format Compo#o Value #o. Unsigned 0x0 Unknown 6 Always 0 Short Offset within tag Meaning 0 Length of tag in bytes (i.e. twice the number of shorts) 1: macro 1 Macro mode 2: normal 2 If non-zero, length of self-timer in 10ths of a second 3 unknown 0: flash not fired 1: auto 2: on 3: red-eye reduction 4 Flash mode 4: slow synchro 5: auto + red-eye reduction 6: on + red-eye reduction 16: external flash (not set on D30) 0: single or timer (see field 2) 5 Continuous drive mode 1: continuous 6 unknown 0: One-Shot 1: AI Servo 2: AI Focus 7 Focus Mode 3: MF Unsigned 0x1 Unknown varies 4: Single (but check field 32) Short 5: Continuous 6: MF 8, 9 unknown 0: large 10 Image size 1: medium 2: small 0: Full Auto 1: Manual 2: Landscape 3: Fast Shutter 4: Slow Shutter 5: Night 11 "Easy shooting" mode 6: B&W 7: Sepia 8: Portrait 9: Sports 10: Macro / Close-Up 11: Pan Focus 12 unknown 0xffff: low 13 Contrast 0x0000: normal 0x0001: high

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0xffff: low 14 Saturation 0x0000: normal 0x0001: high 0xffff: low 15 Sharpness 0x0000: normal 0x0001: high If zero, use ISOSpeedRatings EXIF tag instead 15: auto 16: 50 16 ISO 17: 100 18: 200 19: 400 3: Evaluative 17 Metering mode 4: Partial 5: Center-weighted 18 unknown 0x3000: none (MF) 0x3001: auto-selected 19 AF point selected 0x3002: right 0x3003: center 0x3004: left 0: "Easy shooting" (use field 11) 1: Program 2: Tv-priority 20 Exposure mode 3: Av-priority 4: Manual 5: A-DEP 21, 22 unknown 23 "long" focal length of lens (in "focal units") 24 "short" focal length of lens (in "focal units") 25 "focal units" per mm 26 - 28 unknown Bits 15..0: 14: external E-TTL 13: internal flash 29 Flash details 11: FP sync used 4: FP sync enabled other bits unknown 30 - 31 unknown G1 seems to use this in preference to field 7 32 Focus mode 0: Single 1: Continuous Unsigned 0x3 Unknown 4 unknown Short Offset within Meaning tag 0 Length of tag in bytes (i.e. twice the number of shorts) 1 - 6 unknown 0: auto 1: Sunny 2: Cloudy 7 White balance 3: Tungsten 4: Flourescent 5: Flash Unsigned 6: Custom 0x4 Unknown varies Short 8 unknown 9 Sequence number (if in a continuous burst) 10 - 13 unknown Only set in One-Shot mode? If none used, AF failed or manual focus was used (e.g. on a lens with full-time manual focus) 14 AF point used Bits 15..0: 15-12: number of available focus points 2: left 1: center

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0: right 0xffc0: -2 EV 0xffcc: -1.67 EV 0xffd0: -1.50 EV 0xffd4: -1.33 EV 0xffe0: -1 EV 0xffec: -0.67 EV 0xfff0: -0.50 EV 0xfff4: -0.33 EV 15 Flash bias 0x0000: 0 EV 0x000c: 0.33 EV 0x0010: 0.50 EV 0x0014: 0.67 EV 0x0020: 1 EV 0x002c: 1.33 EV 0x0030: 1.50 EV 0x0034: 1.67 EV 0x0040: 2 EV 16 - 18 unknown Units are either 0.01m or 0.001m (both have been observed). Still Subject 19 investigating. Distance In any case, the SubjectDistance EXIF tag is set by Canon cameras. e.g.: "IMG:EOS D30 JPEG" 0x6 Image type Ascii string 32 Has trailing whitespace. 0x7 Firmware version Ascii string 24 May have trailing NULs and whitespace. Unsigned Normally reported as FFF-XXXX. 0x8 Image Number 1 Long FFF is this value divided by 1000, XXXX is this value mod 1000. 0x9 Owner name Ascii string 32 May have trailing NULs and whitespace. Unsigned 0xa Unknown varies unknown Short High 16 bits are printed as a 4-digit hex number. Camera serial Unsigned Low 16 bits are printed as a 5-digit decimal number. 0xc 1 number Long These are concatenated to form the serial number. Example printf() format string would be "%04X%05d". Unsigned 0xd Unknown varies unknown Short Unsigned First short is the number of bytes in the tag (i.e. twice the number of shorts) 0xf Custom Functions varies Short For each other value: the top 8 bits are the C.Fn number, and the lower 8 bits are the value.

EOS D30 Custom Functions

C.Fn #ame Value 0: Off 1 Long exposure noise reduction 1: On 0: AF/AE lock 1: AE lock/AF 2 Shutter/AE-lock buttons 2: AF/AF lock 3: AE+release/AE+AF 0: Disable 3 Mirror lockup 1: Enable 0: 1/2 stop 4 Tv/Av and exposure level 1: 1/3 stop 0: On (auto) 5 AF-assist light 1: Off 0: Automatic 6 Shutter speed in Av mode 1: 1/200 (fixed) 0: 0, -, + / Enabled 1: 0, -, + / Disabled 7 AEB sequence/auto cancellation 2: -, 0, + / Enabled 3: -, 0, + / Disabled 0: 1st-curtain sync 8 Shutter curtain sync 1: 2nd-curtain sync 0: AF stop 9 Lens AF stop button Fn. Switch 1: Operate AF 2: Lock AE and start timer

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0: Enable 10 Auto reduction of fill flash 1: Disable 0: Top 11 Menu button return position 1: Previous (volatile) 2: Previous 0: Not assigned 1: Change quality 12 SET button func. when shooting 2: Change ISO speed 3: Select parameters 0: Disable 13 Sensor cleaning 1: Enable

History

rev. 1.4

Added Makernote of Canon Added Color/Tone TAGs to Fujifilm's makernote

rev. 1.3

Added Exif2.1 specification Added Makernote of Fujifilm

rev. 1.2

Added DCF specification Added Interoperability IFD Added Makernote of Nikon/Casio

rev. 1.1

Added byte align explanation to TAG Mark of TIFF header Corrected data format of some TAGs to "unsigned short/long" Corrected value of FocalPlaneResolutionUnit Added Appendix 1: MakerNote of Olympus

rev. 1.0

First release

Acknowledgement

I would like to thank to;

Daniel Switkin: Byte align of TAG Mark, Format of ImageWidth/ImageLength Peter Esherick: MakerNote of Olympus Matthias Wandel: Value of FocalPlaneResolutionUnit Max Lyons : Makernote of Nikon ...His webpage Eckhard Henkel : Makernote of Casio ...His webpage David Burren : FocalPlaneResolutionUnit of Fujifilm's / Makernote of Canon ...His webpage

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