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 CRW format was supported by some earlier Canon digital cameras:[3] Besides Canon's ZoomBrowser and Digital Photo Professional, several other software programs provide read support, and sometimes write support, for CRW files including: