.cr2

What is a .cr2 file?

CR2 is Canon's RAW image format — unprocessed sensor data from DSLR and mirrorless cameras for professional photo editing.

Safe format
Type Image
By Canon
MIME image/x-canon-cr2

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What is it

You shot photos with a Canon DSLR and the files are .cr2. This is Canon's RAW format for most cameras released between 2004 and 2018 — unprocessed sensor data that gives photographers full control over exposure, white balance, and colour in post-production. Newer Canon cameras use CR3 instead.

CR2 files are based on the TIFF format with Canon-specific extensions. Each file stores the raw sensor readings at 12-bit or 14-bit depth, preserving detail that JPG compression would discard. A typical CR2 file is 20-30 MB for APS-C sensors and 40-60 MB for full-frame. Canon includes a small JPG preview inside each CR2 for quick viewing, which is what your OS shows as a thumbnail.

Adobe Lightroom (subscription) is the industry standard for CR2 processing. Canon's Digital Photo Professional (free, included with Canon cameras) handles all CR2 files. Darktable and RawTherapee are both free, open-source alternatives. For sharing photos, export from your RAW editor to JPG — CR2 is the editing master, not the delivery format.

Technical details
Full Name
Canon RAW Image
MIME Type
image/x-canon-cr2
Developer
Canon
Magic Bytes
49 49 2A 00 10 00 00 00 43 52
Safety
.cr2 is a known, safe format.
What opens it
Adobe Lightroom
Subscription All
darktable
FREE All
RawTherapee
FREE All
Canon Digital Photo Professional
FREE All
FAQ
What's the difference between CR2 and CR3?
CR2 is Canon's older RAW format (TIFF-based). CR3 is the newer format (ISO Base Media File Format, like HEIF/MP4) used in Canon cameras from 2018 onwards. CR3 offers better compression and new features. Both contain full unprocessed sensor data.
Can I open CR2 without Canon software?
Yes. Adobe Lightroom, darktable (free), and RawTherapee (free) all open CR2 files. Windows can display CR2 thumbnails with the Canon RAW codec. macOS Preview may open CR2 depending on the camera model.
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