File Type Canon Raw CIFF Image File IconCanon Raw CIFF Image File
File Format Proprietary (Canon)
Usage Open manually
Rank ★ ☆ ☆  Uncommon

A CRW file is a camera raw file created by a Canon digital camera. It is saved in the Canon CIFF (Camera Image File Format, not "Canon Image File Format").

CIFF is a container format used to store raw images and corresponding metadata. It was used by many early Canon cameras such as the Canon 10D and the original Digital Rebel. However, it has since been replaced by the updated .CR2 format.

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Updated 2007
Information from the PC File Extensions Reference