I have two R1 bodies which I use for indoor theatrical work. I shoot stills only, and always in single-shot mode -- never video, and never continuous shooting. Averaged over several hours, my shooting rate is typically 1 shot per second.
In such usage, both bodies routinely give overheating warnings. I frequently see 1 to 3 white bars; the most I've seen is 6 white bars.
One body was sent to CPS. CPS replicated the problem and addressed it by replacing the main circuit board. The fix was not effective, as the problem still exists.
While neither body has ever shut down from overheating, this behavior is still a concern. Per page 338 of Canon's published EOS R1 Advanced User Guide, "The white [thermometer icon] icon indicates that the image quality of still photos will decline."
Similar overheating behavior has been reported by other users in other forums. Some key areas of discussion (and my personal technical opinions) are:
- Whether the make and model of memory card matters. (It doesn't.)
- Whether the behavior exists when the camera's Auto Power Off Temperature is at Standard. (It does.)
- Whether the appearance of the overheating warning in stills shooting has any significance for stills shooting* (It does.)
* One user reported that a CPS rep informed them that the overheating warning has no significance for stills shooting. The user was told that the significance of the warning is that if the user were to begin shooting video, the camera would be at risk of overheating. (This is contradicted by the EOS R1 Advanced User Guide, p. 338.)
I invite all members of this Community to share any experiences where their R1 body gave an overheating warning during undemanding stills shooting.
Participation in this thread by Canon technical staff will be greatly appreciated.
