I partly agree with Paul. What you could gain, though, is to match matte screen 
focus with the hexagonal AF indicator.

I believe you can only match one MF lens, since all MF lenses look the same to 
the camera eletronics.

Jostein

Paul Stenquist <[email protected]> wrote:

>I think the only way one could adjust for manual focus would be by
>shimming the screen. I haven't seen anything to indicate that manual
>focus is less than precise on any of my recent Pentax cameras. The
>autofocus adjustment is electronic and done by means of the menu. I
>fine tune autofocus on all of my cameras for all of my autofocus
>lenses. Most needed some tweaking to nail the focus point.
>
>Paul
>On Oct 25, 2012, at 9:51 AM, jn289 <[email protected]> wrote:
>
>> Has anyone done focus adjustment on any of their manual focus lens on
>the K-7 or K-20d bodies ?
>> I have not used the focus adjustment feature on any of my glass,
>manual or auto focus.
>> 
>> Thanks, Joe
>> 
>> 
>> http://photo.net/photos/pjjdxn
>> 
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