No, but I never use autofocus with macro lenses. Doesn't work well for most 
subjects.

Paul via phone

> On Jul 16, 2016, at 2:56 AM, Larry Colen <[email protected]> wrote:
> 
> 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?
> 
> -- 
> Larry Colen  [email protected] (postbox on min4est) http://red4est.com/lrc
> 
> 
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