Canon has released new firmware updates for the Canon EOS R5 and EOS R6 mirrorless cameras. The EOS R5 specifically sees some AF accuracy optimisation when using the recently announced Canon RF 800mm f/5.6L IS USM and RF 1200mm f/8L IS USM lenses with the RF1.4x and RF2x teleconverters. Both cameras, however, see improvements to the stability and reliability of Eye Detection autofocus as well as AF tracking for moving subjects.
If you’ve upgraded your camera firmware and you’re not happy with it, you may want a real-life “Undo” button to bring everything back the way it was. There are two possible ways to downgrade your camera firmware to the previous version, and in this video, Kolbassia of KH CAMS will show you how to do it on your Canon.