BackscatterUW
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Canon underwater shooters are spoiled for choice at the moment between two great full-frame mirrorless cameras with the Canon EOS R5 and Canon EOS R5 C. While these cameras appear similar in both name and appearance, there is a lot going on under the hood that makes shooting each of them a totally different experience underwater. While the Canon EOS R5 is great for photos, it left many advanced video shooters disappointed due to overheating.
Does the Canon EOS R5 C improve on the significant overheating concerns that hampered the Canon EOS R5’s high-end specs? Do these cameras continue the Canon tradition of excellent white balance color results when shooting video with ambient light? With so many recording options to choose from, where does an underwater image maker begin?
To get these answers and more, we asked award-winning wildlife filmmaker Cristian Dimitrius and underwater media producer Joel Penner to break it down for us. Cristian and Joel recently spent time on each of these rigs at the Digital Shootout and beyond to put them through their paces. Read on for a comparison of each of these camera systems and everything one needs to know about shooting them underwater.

The Canon EOS R5 with Nauticam NA-R5 Housing and the Canon EOS R5 C with Nauticam NA-R5C Housing

Joel Penner and Cristian Dimitrius taking a selfie break while field testing the latest Canon cameras for Backscatter during the Digital Shootout.
Canon EOS R5 Underwater Sample Footage by Joel Penner | Bonaire
Canon EOS R5 C Underwater Sample Footage by Joel Penner | Bonaire

The Canon EOS R5 has a thinner profile than the Canon EOS R5 C which has an extended back to fit the fan.

The Nauticam NA-R5 housing is a bit smaller than the Nauticam NA-R5C. They both share an N120 port opening, but the Nauticam NA-R5C gains the luxurious oversized cinema-style focus and zoom knobs and an external battery option.

Both the Canon EOS R5 and Canon EOS R5 C can capture 8K video for future-proof footage. A proxy-file workflow is the secret to handling and editing the beefy original 8K video files easily.