"Keep in mind that DOF is deeper from from to back than back to front. In other words, if you focus on the eye - which is good to do, but you miss it for the ear or the body, your face will be out of focus because the DOF is VERY VERY short in front of the focuse point. If you miss the focus on the nose, your likely going to get the face, in any case, your eye will be in focus. . ."
Didn't know this trick ! Really good advice , I usually try for the eye but a nose is a whole lot bigger and easier to focus on . Thanks !