I noticed in interesting issue with K-1 autofocus. So far I've noticed it with macro lenses, in fairly low light and/or low contrast situations. When I'm close, but not "macro close", sometimes the focus will rack out to full macro and will stick there. It doesn't reach the end, decide it couldn't find focus and rack back in towards infinity focus. It just racks out to the end stop and keeps trying to focus closer, even though it is at the end of its travel.

I wonder if it's some sort of aliasing on phase detection where it's gone past half a phase out of sync and is trying to reach the other one.

Has anyone else ever encountered a similar problem?

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Larry Colen  [email protected] (postbox on min4est) http://red4est.com/lrc


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