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I'm upgrading from the A7s to the A7sii for the low budget commercial/short films that can't afford to rent.  This means I rarely do long takes.  Looking through the forums these camera's do have an overheating problem.  I do have a pretty decent kit from my A7s including a dummy battery to V-mount, cage, and Odyssey7Q+.   Though I rarely used my old A7s for 4k since I don't exactly trust HDMI, i've never had an overheating issue with it. 


It seems like using external batteries, pulling the screen off the back, and the v3.0 firmware helps with cooling during 4k.  But it seems like most tests are on continues takes, not for multiple 1-5min takes.  Was wondering what peoples experiences are with non-continues 4k recordings, also if anyone uses a dummy battery does that appear to help with overheating.


Best regards

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