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Camera Image File Format

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Camera Image File Format (CIFF)
Filename extension
.crw
Internet media typeimage/x-canon-crw
Developed byCanon, CIFF Forum
Initial release12 February 1997; 27 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; 26 years ago (1998-02-09)
Type of formatraw image format
Extended toDCF 1.0 (JEIDA-49-2-1998)
Websiteciff-forum.com (Dead link)

In digital photography, the Camera Image File Format (CIFF) file format is a raw image format designed by Canon, and also used as a container format to store metadata in APP0 of JPEG images.[1] Its 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 The format is no longer used by Canon, having been superseded by the CR2 file format.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

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The CRW format was supported by some earlier Canon digital cameras:[3]

Software that supports CRW

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Besides Canon's ZoomBrowser and Digital Photo Professional, several other software programs provide read support, and sometimes write support, for CRW files including:

See also

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References

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  1. ^ Phil Harvey (September 6, 2010). "CanonRaw Tags". ExifTool. Archived from the original on 2 October 2011. Retrieved 18 October 2011.
  2. ^ "CIFF Specification on Image Data File Version : 1.0 revision 4" Archived 2008-12-30 at the Wayback Machine. Canon Inc. (via Xyrion.org). December 24, 1997. Retrieved 2013-05-06.
  3. ^ "Inside the Canon RAW format version 2, understanding .CR2 file format and files produced by Canon EOS Digital Camera". Lclevy.free.fr. Archived from the original on 2017-12-04. Retrieved 2013-05-06.
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