P PhotoGuy May 3, 2015 24 0 290 Nov 20, 2017 #1 Nov 20, 2017 #1 I purchased a 24-70 f4 IS recently. I noticed that focussing in live view is very quiet. How does this lens perform with DPAF focusing during video? Do the new USM lenses perform well enough or is STM the way to go?
I purchased a 24-70 f4 IS recently. I noticed that focussing in live view is very quiet. How does this lens perform with DPAF focusing during video? Do the new USM lenses perform well enough or is STM the way to go?
