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[OM] Shims for focusing screens in OM?

Subject: [OM] Shims for focusing screens in OM?
From: usher99@xxxxxxx
Date: Thu, 06 Aug 2009 17:38:13 -0400
Thanks for the info, John.  I'll not be messing with that any time soon.
Perhaps I need to spend less  of the  little time I have  focusing on 
focus targets.
Mike






In an OM body I can check mirror angle, finder focus, infinity focus.
Messing with the factory shimming of the screen is to be avoided. Prism
has to come out to change them, they are glued in, it can be an all day
job.  I haven't done one in decades.
___________________________________
John Hermanson  |   CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121  |  www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html


usher99@xxxxxxx wrote:
> Very clear that many Canyon offerings may front or back focus through
> the VF using MF .  I believe that the  OM 5DII has a small shim for 
the
> screen and replacemnts both thicker and thinner are available.  The
> range of "in spec" for servicing is disturbingly wide, unless
> a nice technician is encountered.  Have not seen this issue mentioned
> much with OM.  Perhaps a MF system is manufactured to
> tighter tolerances?  It would be more of a pain to check of course.
> Wonder if John can check this somehow.  I know from
> many very narrow dof shots in macro at 1:1 or greater that at least 2
> bodies I have are spot on or very close.
>
> A not really looking for trouble,
> Mike
>
>
> Oh, then this issue also needs to be considered of course for digital
> film for zuikos.  Posted this before:
>
> http://www.jayandwanda.com/photography/dslr_man_focus/man_focus.html
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