Canon EOS R5 overheating vs Panasonic S1H and Sigma Fp designs In: Cameras Posted July 14, 2020 1 hour ago, Django said: The Sigma FP is a 8-bit only internal recording camera, has no 4K60p, no PDAF and Sigma just confirmed it can’t even record LOG due to « design limitations ». It’s a very powerful camera in relation to its minuscule size and surely an ingenious passive cooling design, but thermal issues remain and are surely the cause of such limitations. The S1H, despite an active cooling system and body almost twice the size/weight can only do 4K60p with a S35 crop. No PDAF either on that camera. Canon chose to unlock superior specs at the risk of overheating, which I understand is a polarizing decision, however I’m not sure there is a strong case to be made against its thermal balance giving the power it unleashed compared to those two cameras with a passive cooling system. Sony however, if the spec rumors are true may be on such a breakthrough.. + S1H + Sigma FP don´t have a stabilised sensor. I think thats one of the biggest reasons - IBIS requires the sensor to be able to "float" in the body. This means the sensor cannot be mounted to a heatsink.