Canon USA has issued a media alert to address concerns regarding the EOS R5 overheating when shooting video, stating that installing an internal cooling fan would jeopardise the camera’s compact size.
A big deal about Canon’s pro-oriented EOS R5 is the impressive 8K video shooting capabilities, however a caveat may be overheating issues. The camera can shoot a maximum 20 minutes of 8K video in ideal conditions (23 degrees) before cooling down, preferably by being turned off. After 10 minutes cooling down the EOS R5 can capture just three minutes of 8K video, or eight minutes after 20 minutes of cooling.
The chart doesn’t factor in direct sunlight and other environmental factors contributing to overheating.
Canon says the combination of features ‘inevitably’ generates ‘some significant heat’, and the company resolved to include an ‘Overheat Control’ function to reduce heat when in standby, and magnesium alloy construction to dissipate heat from internal components.
‘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 recommends users reduce heating by using the Overheat Control function, turning off the camera between recordings, position the camera out of direct sunlight, and use an external fan.
While it remains to be seen if recording 8K video is greatly useful, given few devices are capable of displaying 8K, videographers intending to shoot a live event with the EOS R5 may need to prepare for overheating.
Comparatively the Panasonic S1H has a near-silent internal cooling fan, allowing the camera to shoot video without limitations. It, however, weighs 1.1KG compared with the EOS R5’s nimble 738 grams. And as for Sony, it’s high performance mirrorless cameras have a reputation for overheating when shooting video.