Larry,

On Mon, Dec 14, 2009 at 9:37 AM, Larry Colen <[email protected]> wrote:
> I think that this means that the focusing screen is not properly calibrated.
> I ran into this problem on my K20D. Rachel Katz said that with the K20s, the
> number of miscalibrated screens went  way up. In my case, they had measured
> the necessary shim for the focusing screen then accidentally put two of them
> in. At least I assume that is what happened because when I took out one of
> the focusing screens it was right on.
>
> My suggestion is to try it with several lenses, wide open and as close as
> the lens will focus to minimize depth of field. If you can, also test it
> with the lens on auto focus while you're at it.
> Write which lens and auto or manual on a small card that you put in each
> shot so you can tell what is going on when you look at the pictures.

Do you suggest that I take the measurements and then send them to
Rachel Katz as an indication that I may be needing a replacement
screen?

-- 
Boris

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