.cr2

Raw, uncompressed image file saved by Canon digital cameras; based on the .TIFF format and stores image data exactly how it was captured by the CCD; settings such as exposure and white balance can be adjusted with image-editing software after the image is saved to a computer.

Earlier Canon cameras also use the .CRW format, which is based on the Camera Image File Format (CIFF); for additional information about decoding CR2 files visit this CR2 Decoding resource.