Canon’s recent announcement of the new EOS R5 wasn’t completely unexpected, but one of the camera’s key specifications, 8K video, did catch us a bit by surprise. 8K video has been in development for several years, but to date it’s mostly been limited to Hollywood-level cinema production and tech demos by Japanese broadcaster NHK.

With the R5 it looks like that may be about to change. In fact, we now know that the R5 will be able to capture 8K/30p using the full width of the sensor.
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https://www.dpreview.com/articles/2262384849/canon-eos-r5-here-s-why-you-probably-don-t-need-8k-right-now-and-why-you-might