After making a fairly straightforward thermal modification to his new Canon EOS R5, maker/tinkerer Yifan Gu was able to get the camera to record unlimited 8K without having to resort to various timer resetting "hacks." All he had to do was swap out the thermal pads and add a couple more.
Roger Cicala and the team at Lensrentals recently decided to do a proper heat emission test on the Canon EOS R5. After all the debates in the comments, amateur teardowns published to Weibo, and a whole lot of speculation, LR wanted to answer a basic question well: how does heat get out of this camera... or does it at all?
Most regular consumers haven't even received their Canon EOS R5 pre-order yet, but the company has already released a major firmware update for the camera. And while Canon doesn't actually SAY it in the documentation, this update does improve both the base overheating and the recovery times.
The plot thickens... in a pair of videos released this week, YouTuber and Twitch streamer Wayne from No Life Digital shows how simply removing the memory cards from the Canon EOS R5 basically "fixes" the camera's overhearing problems when shooting to an external recorder.
When Canon released the EOS R5 and EOS R6, they made it clear right away that both cameras were thermally limited when shooting 8K (R5) or oversampled 4K (both) video. But what does this mean for real world use? DPReview has now tested both cameras, and their conclusion is unfortunate for Canon fans who hoped that overheating concerns were made up or overblown.