DotTune: Video Tutorial for AF tuning without photographs

Started Feb 18, 2013 | Discussions thread
sroute
Senior MemberPosts: 2,459
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Re: That is an important change.
In reply to lock, Feb 24, 2013

lock wrote:

But what does it tell us about MF? Doesn't it meand you will get a focus confirmation which is outside the normal AF in focus range? Hence, the risk of a less accurate focus ? That would surprise me...

It is logical that Nikon would loosen up the focus confirmation signal when a lens/camera is used in manual focus mode, because not all lenses are good at nailing the precise micro-adjustment needed to hit focus on the head. Some of our AF lenses go from minimum focus distance to infinity in a fraction of a full focus ring turn.

Many lenses, AF or MF, don't have a fine grained focus adjustment - between short focus throw and lens play, it could be hard to "nail" focus the way the AF motors can - they aren't human after all.

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