Here is a incredibly cool Canon EOS R5 hack, performed by a very talented guy with solid engineering skills (take this as a warning: don’t do it at home).
The guys behind DIY Perks have disassembled a Canon EOS R5 and applied a water-cooling system to the camera’s motherboard. Unlimited 8K recording time is achieved, no more overheating. However, the water-cooling hack as neat as it is, is a gimmick. These guys did far better.
Since a water cooled EOS R5 would be rather impractically out in the field, DIY Perks came up with a better idea and did some serious thermal engineering. They custom-made a copper heat sink and applied it with thermal paste (not thermal tape) to the CPU and DRAM chips on the camera’s motherboard. In environments that are not too hot this allows for continuous video recording without impairing the handling of the EOS R5. A small fan can be applied to the back of the R5 when it is used in warmer places. A professional looking solution that works.
The video below shows all steps and is very interesting. Kudos to the guys at DIY Perks.
Canon EOS R5 reviews are listed here, for EOS R6 reviews see here. The EOS R5 is highly regarded as a stills camera. In particular, the EOS R5 autofocus system seems to be huge leap forwards. User manual are available for download for the EOS R5 and the EOS R6.
Canon EOS R5: