CRW

Canon Raw Image File

CRW is a proprietary raw image format used by older Canon digital cameras to store uncompressed sensor data. It preserves maximum image detail for professional post-processing.

What is Canon Raw Image File?

The .crw format is Canon's early raw image file format, introduced with cameras like the Canon EOS D30 in 2000. It contains direct, unprocessed data captured by the camera's image sensor along with metadata such as white balance, exposure settings, and camera model. While largely superseded by the newer .cr2 and .cr3 formats in modern Canon hardware, CRW files remain common in archives of early digital photography.

Advantages

Stores uncompressed sensor data for maximum image quality
Preserves original white balance and exposure parameters
Allows non-destructive editing without losing base data
Higher dynamic range compared to standard JPEG files

Limitations

Large file sizes require more storage space
Proprietary format requires specialized software for viewing and editing
Deprecated format no longer supported by current camera models
Lacks modern compression efficiencies found in newer raw formats

How to open Canon Raw Image File files

Canon Digital Photo Professional Adobe Photoshop Adobe Lightroom GIMP IrfanView

Common use cases

Archiving legacy digital photographs taken with early Canon DSLR cameras
Post-processing and color grading vintage digital photo shoots
Extracting maximum dynamic range from older sensor captures
Professional photography restoration

Convert CRW files

Browse all converters

Explore other formats

WebM Video AAC Audio File STL 3D Model DXF Drawing VirtualBox Disk Image Advanced Sub Station Alpha Subtitles BMP image PPM Image QCOW2 Disk Image JPEG image Windows Metafile MP4 Video File

Frequently asked questions

A CRW file is a proprietary raw image format generated by older Canon digital cameras, containing unprocessed sensor data.

You can open CRW files using legacy Canon software like Digital Photo Professional, or modern photo editors like Adobe Photoshop and Lightroom with proper codec support.

No, Canon replaced CRW with the CR2 format, and subsequently with the CR3 format in newer camera models.

Currently, there are no available converters for the CRW format on ConvertX.