In case it helps, I have seen somewhere (sorry I am not sure where: either this forum or youtube or both?) that R7's AF gets much improved if used at high (not high plus or ES) so 8 fps.FWIW, the AF in my R8 already runs circles around the R7 when it comes to birds, I’m convinced the R5II will be even better.
The R8 finds the eyes faster, further away and keeps them in focus during bursts. The R7 delivers a lot more pixels per heron, but the keeper rate is a lot lower, for me.
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