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There has been a lot of concern recently about how the Canon EOS R5 and Canon EOS R6 handle heat when recording 8K and 4K video. Canon has released an official statement on the issue.
Details Regarding Canon EOS R5/EOS R6 Overheating During Video Recording
The EOS R5, one of the latest additions to Canon’s full-frame mirrorless camera line, offers class-leading autofocus with high-resolution and high frame rate video recording options using the maximum width of the full-frame sensor at high bit rates. Inevitably, this combination of features has the potential to generate some significant heat, which will limit recording time.
Canon has taken several steps to manage the potential for overheating, including:
- Magnesium alloy was used in the body to dissipate heat away from internal components
- An “overheat control” function to reduce heat generation when the camera is in standby
In regard to the installation of a fan: The decision not to install a fan within the body was made in order to maintain the EOS R5’s compact size, lightweight construction, and weather resistance.
Before recording starts, the EOS R5 and EOS R6 display an estimate of the recordable time based on the current camera temperature and the set recording mode.
Canon has published and included below the approximate recording and estimated recovery times for 23°C / 73°F environments and ensure that the camera will warn users when it is getting too hot. Additionally, tips to reduce overheating as well as recovering time are listed below.
How can you reduce heat buildup in the EOS R5?
- Set Overheat Control function to “ON” (default). When the overheat control function is enabled, the movie size and frame rate are automatically changed while the camera is in standby mode to suppress the rise of the internal temperature
- Between recordings, it is recommended to turn off the camera
- Position the camera out of direct sunlight
- Use an external fan to dissipate heat
How long will it take for the camera to recover?
Estimated camera recovery times are indicated below. The time until full record time is available will vary with ambient temperature, continued camera operation, and the selected shooting resolution.
What about the EOS R6?
Like the EOS R5, the EOS R6 offers powerful movie recording and stills capabilities within a compact body design. At the highest frame rates and resolutions, heat is inevitably generated. We believe the EOS R6 offers the best in class performance, especially for enthusiast photographers and video content creators.
The EOS R6 can record up to the 29 minutes 59-second recording limit in the 5.1K oversampled 4K 60p mode at (23°C / 73°F) before encountering any heat-related issues within the camera and up to 40 minutes of 4K at 30p.