Overheating issues Shortly after the EOS R5's initial announcement, concerns arose about issues of
overheating while recording video, especially
8K video, after short periods of time. In response to users' complaints, Canon issued a media alert addressing these overheating issues, including how long it will take for the camera to overheat at each resolution, why a fan was not included, and how users can prevent the camera from overheating. According to Canon's reported data, the EOS R5 will begin to overheat after recording for 20 minutes at 8K resolution though the average run time of videos published on social media is 11.7 minutes. A fan was not included to preserve its compact size. Users can delay overheating by toggling on "Overheat Control" in settings, which will adjust
resolution and
frame rate automatically to prevent overheating. Although Canon offered this explanation, users have continued to complain. Other testers, however, discovered continuous shooting is possible for up to four hours in 4KHQ mode with an external recorder if no memory cards are inserted, the screen is off, and a dummy battery is used. With an actual battery, again overheating can be avoided for the life of the charge of the battery, about one hour and 45 minutes. == Canon EOS R5 C ==