[wim]

FWIW, I reckon it's the Summicron-SL 90mm f/2 - which features AF - albeit not on EOS, of course.

Ah, I see. Not my kettle of fish, however.

As for the EOS R - it still fights me at times. In terms of shape, it's among the best though.
Unfortunately, Sony refuses to learn.

I find that occasionally the EOS R is too clever for its own good when it comes to AF modes. I should really read up on it, I never did, just trial and error. However, the 2 modes I normally use are always spot on, and misfocus basically means user error.
With the R5 AF should only get better .

Kind regards, Wim