I have the 5D Mark II, I'd like to upgrade to the 5D Mark III this year.
How would people take photos using large apertures where the subject is moving, say a child for example.
How to keep getting focus on the eye?
I assume the central AF point is not ideal, you probably aren't going to have an eye dead bang in the centre of the image.
Do you pick an AF point (assuming not central) to work with? and only get compositions where that is on an eye. Or do you rely on "auto-point?"
I am expecting too much to try and hit focus on wide apertures on a move subject at reasonably close distances?