Hummingbird sequence posted over in the R5 image thread shot in ES shows that distortion is well controlled in most of these wing positions. I see a few that are a bit distorted at the tip but 1000x better than what the A7RIV and Z7/50 that I've owned do...those ones make most shots of hummers unusable.
The R5 is going to work in ES for the majority of BIF. I also had a member share a long sequence of a kingfisher IF that showed no distortion in the wings and shot in ES.
There will still be some shots ruined that an A9 wouldn't have ruined but I think ES is going to be very useable even for quicker BIF.
Aug 06, 2020 at 01:48 PM
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