My apologies if this had been previously asked, looked, but didn't see an answer.
wwhen you are focusing using one of the focus zones such as within "local focus", where within the specific focus square is the actual point of focus or does it use everything within the area or just the edges?
It seems that on occasion when shooting a portrait, the focus would be an eyebrow rather than the iris - not much an issue when shooting at f4, but seems to cause a little softness on the actual eye at f1.7 or f2 (Old Maxxum 50/1.7). Just curious if this is something that can be influenced by where within the focus box you put the subject - especially if the focus box can hold more than just the actual point you want in focus.
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