The Canon EOS R3 is a professional-grade full-frame mirrorless camera featuring a 24.1MP back-illuminated stacked CMOS sensor, 30fps electronic shutter, and unique Eye Control AF technology. It bridges the gap between the EOS-1D X series and consumer R cameras, targeting professional sports and wildlife photographers who need speed and weather sealing. Firmware updates deliver autofocus improvements and new features.
Product released: November 1, 2021
Latest firmware version
Version 2.0.0, released November 6, 2025
What's new in version 2.0.0
Firmware Version 2.0.0 incorporates the following enhancements and fixes: 1. Adds support for the EOS Multi Remote, a remote shooting system for professional photographers. For an overview and specifications of EOS Multi Remote, please refer to the Canon website: https://ssw.imaging-saas.canon/app/app.html?app=emr 2. Fixes an issue in which Err50 may be displayed when using Eye Control. 3. Fixes an issue in which image transfers to an FTP server may fail, displaying Err41. 4. Fixes an issue that, in rare instances, may prevent certain CFexpress cards from being formatted in the camera. If the camera's firmware is already Version 2.0.0, it is not necessary to update the firmware. Please perform the firmware update with only the firmware file to be updated stored on the memory card. Notes: Users manual in the WEB is updated accordingly. Please download the manual as well as the latest firmware. You can download it from the official WEB site.