So I've also had this problem with my R5 and now my R3. Turn on the camera and nothing. If I remove and reinsert the battery? It turns on. When I got the R3 I updated the firmware and initially that seemed to fix it but I was shooting an event last night and it started this again. Turn on. Pull battery. Reinsert battery. I have tested this with and without the EF-R adapter and with several lenses (RF 24-105, EF 70-200, Sigma 24-70) and every situation I have the same issue.
I've seen that this was an issue and wondered if anyone has figured out what causes this? Thanks!
Installing firmware on a camera that is exhibiting electronic malfunctions such as locking up is highly inadvisable. What if it decides to lock up in the middle of the installation? I’d try a new memory card before I’d try a firmware update, which rarely fixes electronic malfunctions, anyway. How could it?
Has the GPS always been disabled? If you did a factory reset, then give it some time to see if the issue resurfaces.
I have the same issue. Only with the EF-RF adapter.
Sometimes it happens when i turn on the power switch - most of the time it happens in powersafe - trying to reactive the camera.
Firmware 1.5.1 seems to fix similar issues - but it didn't fix this for me.
Canon EOS R3, EF-RF Adapter, EOS 16-35mm and 100-400mm. The 16-35mm is the worst in this case...
Is there any solution?
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.