AF tunning what actually happens?????

Started Jan 24, 2014 | Discussions thread
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AZ Steve
Regular MemberPosts: 194
Re: AF tunning what actually happens?????
In reply to Horshack, Jan 25, 2014

Certainly it was widely asserted here and there in the past several years that AF was a single instruction to the lens -- that it did not "check to see whether it had got it right".  But certainly lenses do hunt sometimes.  I have a curious example of a lens that seems to stop hunting too soon:  a 70-200mm VRI that has severe random errors in focus on AF-S, but functions reasonably satisfactorily on AF-C, if it has a second or so to settle down.  Nikon service has checked it and pronounced it fine, of course.

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