Canon RAW Formats Explained
Canon uses two RAW formats: CR2 (Canon RAW version 2), introduced with the EOS 20D and used through the 5D Mark IV era, and CR3 (Canon RAW version 3), introduced with the EOS M50 and used in all modern Canon cameras including the R-series mirrorless line. Both formats store the full sensor data but have different compression and metadata structures.
Many photographers are surprised to find that free tools handle these formats as well as Canon's own Digital Photo Professional (DPP) software and in some cases better.
imagic
imagic natively supports both CR2 and CR3 formats for AI-powered culling. Install with pip install imagic and point it at a folder of Canon RAW files. The Analyse step scores every image for sharpness, exposure, noise, composition, and detail, groups burst sequences, and prepares a curated set of selects in minutes. imagic runs on Windows, macOS, and Linux.
For Canon photographers shooting high-volume events, imagic's burst detection is particularly valuable. Canon cameras in continuous shooting mode generate large clusters of near-identical CR3 files that imagic groups and pre-selects automatically.
darktable
darktable has excellent CR2 and CR3 support via LibRaw. The colour calibration module includes built-in calibration data for many Canon cameras, producing accurate colour from the start. darktable is free and available for all platforms.
RawTherapee
RawTherapee's demosaicing support for Canon files is excellent. It handles CR2 natively and has CR3 support in recent versions. For Canon photographers who print large-format, RawTherapee's fine detail rendering is worth the investment in learning the tool.
Canon Digital Photo Professional
Canon's own DPP is free for Canon camera owners and provides the most accurate out-of-camera colour rendering using the same processing engine as the camera. However, it lacks AI culling features. Use it alongside imagic if you want Canon's exact colour signature on your selects.
Recommended Workflow for Canon Shooters
- Import CR2/CR3 files and run imagic Analyse for AI culling and burst grouping
- Cull selects in imagic Review step
- Process selects in darktable or RawTherapee for final editing
- Export to JPEG for delivery
This workflow costs nothing beyond imagic's optional $10 desktop upgrade and handles even the newest Canon CR3 files from the EOS R-series without additional plugins or licenses.