Canon 5DIV

[Busted Knuckles]

Not going to be in a hurry.

I rented the R and didn't notice focus speed, but them again landscapes don't move all that much, and I didn't shoot birds with the R.

I am a believe that much of the 1 vs 5 speed is voltage. I recall the 1 is 14 v. Someone can/will correct me, and voltage increase into the same dc motor makes it more powerful and can move the mass more quickly.

[peety3]

I rented the R and didn't notice focus speed, but them again landscapes don't move all that much, and I didn't shoot birds with the R.

I shot a rugby tournament with a 5DsR on a 100-400II and never felt it was slow whatsoever. If (and this is the big if) I kept the focus point on a human, the shots were (I think) 100% accurate every time.