[Rover]

Uh, no mirrorless camera would "lose AF above f/5.6", that was what bottom tier DSLR did. But it's a little odd that lenses are becoming dimmer -- yet not much more compact. I would not go as far as saying that I might not want to touch an f/6.3 lens -- actually I have one of those, haha -- but it does raise eyebrows on my part. Especially things like f/4.5-6.3 (actually pretty much f/5-6.3) ultrawides with 2x range or less.