IBIS (In Body Image Stabilization) poses a unique cooling challenge since sensor is suspended in a magnetic field without any physical contacts for transferring heat. Camera I'll be profiling for 'Cold finger Inside' initiative is an IBIS based Sony a7RII
I have coined the term 'Cold finger Inside' that will become evident as you follow this discussion; what it basically means is putting a cold finger inside the camera in such a way that there is no permanent modification or alteration to the camera and can even be reversible if ever need. Plus it is a non-visible modification in itself.
Following is the starting profile of a7RII with Metabones adapter attached...
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