Is F4 16-35 or 24-105 zoom with speedbooster fast enough for pocket 4K for handheld stuff? Planning to get one of these since they have IS too which is must for handheld imo.
Also, will the IS help if you shoot with shoulder mount or will shoulder mount make the camera so steady that there is no point using IS? I want to archieve that shoulder mounted look where the camera bounces a little when you walk, but is free of the micro jitters.
I have a bunch of fast Canon primes too but none have IS.