Mon 20-Feb-12 08:32 AM | edited Mon 20-Feb-12 02:01 PM by briantilley
>I am thinking that if the focus points are further apart and >cover more of the image, tracking will be better.
The focus points don't move, the array just covers more of the reduced frame.
Engaging one of the crop modes changes only the area of the scene that is recorded. With any given lens and distance, the relationship between AF points and subject is not altered by using a crop mode, so tracking ability should be identical.