The File Extensions Database


.CR3 File Extension

  • Developer by: Canon
  • Category: Camera Raw Files
  • Format: Binary

What is an .CR3 file?

.CR3 is Canon Raw 3 Image File

A CR3 file is an image created by select Canon digital cameras, such as the Canon EOS M50. It may store uncompressed RAW image data exactly how it was captured by the CCD or compressed RAW (C-RAW) image data depending on the camera setting selected. CR3 files were introduced in 2018 with the release of the Canon EOS M50, replacing .CR2 files.

The CR3 format is based on the ISO Base Media File Format, and includes custom tags and the crx codec, which supports lossless RAW and lossy C-RAW compressions. If saved with lossy C-RAW compression, the image is roughly 40% smaller in size with minimal differences in image quality.

The Canon EOS M50 comes with the Digic 8 processor, which allows it to capture images in the CR3 format. Earlier versions of Canon digital cameras used the .CRW and CR2 format. The CRW format is based on the Camera Image File Format (CIFF) and the CR2 format is based on the TIFF specification.

NOTE: CR3 files can be opened in Adobe Lightroom (version 2.0 or later) or Adobe Lightroom Classic (version 8.0 or later) with the Adobe Camera Raw plugin (version 11.0 or later) installed. You can also open CR3 files in Canon Digital Photo Professional and convert them to other formats or in Canon Digital Photo Professional Express on an iPad and convert them to .JPG files.

Programs that open Canon Raw 3 Image File
Windows
Adobe Lightroom with Adobe Camera Raw plug-in
Canon Digital Photo Professional
Mac
Adobe Lightroom with Adobe Camera Raw plug-in
Canon Digital Photo Professional
Linux
Canon Digital Photo Professional
iOS
Canon Digital Photo Professional Express

How to solve problems with CR3 files

  • Associate the CR3 file extension with the correct application. On :
    Windows: Right click on any CR3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.CR3 files". Mac: Right click (or Ctrl-click) the CR3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .CR3 is Canon Raw 3 Image File. Because only the current version supports the latest CR3 file format. Search, therefore, e.g. on the Canon manufacturer website after an available .CR3 is Canon Raw 3 Image File update.
  • To make sure that your CR3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.