It looks like the situation hasn't changed since I started to look into this a year ago; data on image quality degradation, due to sensor heating in e.g. live view and video modes, particularly for mirrorless cameras, is not available. Oodles of users reporting problems and user manuals warn of image degradation, but no hard data. For me, this is a major shortcoming of manufacturers, test houses and technical reviewers alike. If this situation doesn't change when I need to replace my DSLR, mirrorless cameras will be a no-go for me.
I'm not, Jim, but your published data on mirrorless cameras is limited to a handful of Sony's, one Nikon and one Fujifilm, all higher-end, expensive cameras, none include video mode and most don't specify if the camera was in EVF or LCD mode and if they were in the worst case EVF or LCD mode. Yes, your blog gives me more info than any other source, but it's not giving me warm, fuzzy feelings about mirrorless, let alone mirrorless cameras that would be more in my price range.
To determine if mirrorless is a viable option for me, I'm still looking for measurement data on mirrorless camera sensor heating. Anybody?
Isn't it interesting to see that the recently announced Canon R5 and R6 mirrorless cameras have significant overheating issues? Not only very limited video run times and long cooling down periods but also significant heating up when the cameras are switched on and not in video mode. But again, no image degradation data available.
No, its clearly of no interest to you as both cameras are well outside your more modest price range. Shooting 8k has its own problems. Regardless, you started this in-depth investigation with ‘concerns’ over dynamic range. Now you’ve apparently moved on to motion and filming sports.
My suggestions to you are:
1/ Buy any entry level FF MILC and do your own tests if it’s that important. I doubt you’ll be competing with Gursky in the art sales, so there’ll be little DR variation, and almost certainly nothing that you’ll be able to discern.
2/ If you’re that interested in motion, buy a RED and be done with it.
3/ Stop trolling