OK, this may be a record for the resurrection of an old thread, but here goes anyway:
As I always use Center AF point, I'm not in a position to argue the OP's claim that Auto yields more precise focus than SEL. However, I am nevertheless curious what it means when two AF points light up when using AUTO (and they do, in case you're wondering). Is it possible that two points light up when the target is determined to be between these two AF points? And if so, would it not make sense to think that the software is able to adjust the focus distance accordingly, rather than using just one AF point or the other? If this is done, then it would certainly result in more accurate AF.
Does anybody have any practical experience with this?
EDIT: I was lying down, relaxing, and it suddenly occurred to me to wonder what I was thinking when I wrote the above. It implies that AF points are aimed at some fixed locations, which makes no sense. So before somebody else says "stupid", there I've said it myself. Still, one can't help but wonder what it means for two AF point lights to come on.
Last edited by bxf; 11-18-2013 at 12:20 PM.