# Camera Image File Format > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Camera_Image_File_Format > Markdown URL: https://mediated.wiki/source/Camera_Image_File_Format.md > Source: https://en.wikipedia.org/wiki/Camera_Image_File_Format > Source revision: 1184401262 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) File format Camera Image File Format (CIFF) Filename extension .crw Internet media type image/x-canon-crw Developed by Canon, CIFF Forum Initial release 12 February 1997; 29 years ago (1997-02-12) Latest release Image Data Format version 1.0 revision 4; File/Directory Organization version 1.0 revision 3 24 December 1997 (1997-12-24); 9 February 1998; 28 years ago (1998-02-09) Type of format raw image format Extended to DCF 1.0 (JEIDA-49-2-1998) Website ciff-forum.com (Dead link) In [digital photography](/source/Digital_photography), the **Camera Image File Format** (**CIFF**) [file format](/source/File_format) is a [raw image format](/source/Raw_image_format) designed by [Canon](/source/Canon_(company)), and also used as a container format to store [metadata](/source/Metadata) in APP0 of [JPEG](/source/JPEG) images.[1] Its [specification](/source/Specification) was released on February 12, 1997.[2] The CIFF standard consists of two parts, **CIFF Specification on Image Data File** (last revision: version 1.0 revision 4, dated 24 December 1997) and **CIFF Specification on File/Directory organization and File Handling Protocol** (last revision: version 1.0 revision 3, dated 9 February 1998). The format was developed and maintained by Canon with input from the **CIFF Forum**. The format is no longer used by Canon, having been superseded by the **CR2** file format. ## Digital cameras The CRW format was supported by some earlier Canon [digital cameras](/source/Digital_camera):[3] - [Canon EOS D30](/source/Canon_EOS_D30) - [Canon EOS D60](/source/Canon_EOS_D60) - [Canon EOS 10D](/source/Canon_EOS_10D) - [Canon EOS 300D](/source/Canon_EOS_300D) - Canon Powershot Pro1 - Canon Powershots G1-G6 - Canon Powershots S30-S70 ## Software that supports CRW Besides Canon's ZoomBrowser and Digital Photo Professional, several other software programs provide read support, and sometimes write support, for CRW files including: - [Adobe Photoshop](/source/Adobe_Photoshop) - [Aperture](/source/Aperture_(photography_software)) - [darktable](/source/Darktable) - [dcraw](/source/Dcraw) - [ExifTool](/source/ExifTool) - [LibRaw](/source/LibRaw) - [Picasa](/source/Picasa) - [RawTherapee](/source/RawTherapee) ## See also - [Raw image format](/source/Raw_image_format) - [Comparison of image viewers](/source/Comparison_of_image_viewers) - other [digital negative](/source/Digital_negative) formats ## References 1. **[^](#cite_ref-1)** Phil Harvey (September 6, 2010). ["CanonRaw Tags"](http://owl.phy.queensu.ca/~phil/exiftool/TagNames/CanonRaw.html). *ExifTool*. [Archived](https://web.archive.org/web/20111002212518/http://owl.phy.queensu.ca/~phil/exiftool/TagNames/CanonRaw.html) from the original on 2 October 2011. Retrieved 18 October 2011. 1. **[^](#cite_ref-2)** ["CIFF Specification on Image Data File Version : 1.0 revision 4"](http://xyrion.org/ciff/CIFFspecV1R04.pdf) [Archived](https://web.archive.org/web/20081230095207/http://xyrion.org/ciff/CIFFspecV1R04.pdf#) 2008-12-30 at the [Wayback Machine](/source/Wayback_Machine). Canon Inc. (via Xyrion.org). December 24, 1997. Retrieved 2013-05-06. 1. **[^](#cite_ref-3)** ["Inside the Canon RAW format version 2, understanding .CR2 file format and files produced by Canon EOS Digital Camera"](http://lclevy.free.fr/cr2/#intro). Lclevy.free.fr. [Archived](https://web.archive.org/web/20171204011923/http://lclevy.free.fr/cr2/#intro) from the original on 2017-12-04. Retrieved 2013-05-06. ## External links - [CIFF specification](https://web.archive.org/web/20081230095207/http://xyrion.org/ciff/CIFFspecV1R04.pdf) - [Canon CRW Specification](https://web.archive.org/web/20081026041115/http://wildtramper.com/sw/crw/crw.html) - [The Canon RAW (CRW) File Format](http://www.sno.phy.queensu.ca/~phil/exiftool/canon_raw.html) - [CR2 format](http://lclevy.free.fr/cr2/) - [Canon's CR2 Raw File Format Specification](https://web.archive.org/web/20081013212056/http://wildtramper.com/sw/cr2/cr2.html) v t e Graphics file formats Raster ANI ANIM ART AVIF BMP BPG BSAVE CAL CIN CPC CPT DDS DPX ECW EXR FITS FLIC FLIF FPX GIF HDRi HEVC ICER ICNS ICO/CUR ICS ILBM JBIG JBIG2 JNG JPEG JPEG LS JPEG 2000 JPEG XL JPEG XR JPEG XS JPEG XT JPEG-HDR KRA MNG MIFF NRRD ORA PAM PBM/PGM/PPM/PNM PCX PGF PICtor PNG APNG PSD/PSB PSP QOI QTVR RAS RGBE Logluv TIFF SGI TGA TIFF TIFF/EP TIFF/IT UFO/UFP WBMP WebP XBM XCF XPM XWD Raw CIFF DNG Vector AI CDR CGM DXF EMF EMF+ Gerber HVIF IGES PGML SVG VML WMF Xar Compound CDF DjVu EPS MODCA PDF PICT PS SWF XAML Metadata Exchangeable image file format (Exif) International Press Telecommunications Council § Photo metadata Extensible Metadata Platform (XMP) GIF § Metadata Steganography Comparison • Category --- Adapted from the Wikipedia article [Camera Image File Format](https://en.wikipedia.org/wiki/Camera_Image_File_Format) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Camera_Image_File_Format?action=history)). 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