I like taking 'action' photos of kids, partners etc, moving around anywhere. I want to be able to focus on a face and for the camera to maintain focus on that face irrespective of where the 'face' moves in relation to the camera or whereever I move in relation to the subject. I have been unable to get my 6D to do that - I have to refocus every shot. Would an R8 do it? Is there any Canon that could do it? Is it even possible?
