I use a lens collimator with a series of front surface mirrors. Most
important mirror is one that goes into the body in place of the focus
screen. It usually does not need adjusting.
----------------------------------------------------
John Hermanson www.zuiko.com
mail: omtech@xxxxxxxxx
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
----------------------------------------------------
----- Original Message -----
From: "Thomas Heide Clausen" <T.Clausen@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Friday, July 11, 2003 9:18 AM
Subject: Re: [OM] Infinity Focus problem - 55mm f1.2
John,
Just out of curiousity, how do you guys manage to set such things as
the mirror angle accurately and repeatedly? Are there some special
per-camera-mode made tools that you use, or is it something that
there is a generic procedure (and generic tools) for doing? I can't
imagine that it's a repeated trial-and-error with sending films off
for development and then manually inspecting them for "correctness".
No, I am not trying to do this myself -- despite being an engineer, I
know better than to mess with things that I do not have the motorics
nor skills to mess with :)
I am just curious/facinated by such "magic" :)
--thomas
On Fri, 11 Jul 2003 09:03:25 -0400
"John Hermanson" <omtech@xxxxxxxxx> wrote:
> Yes, if only one lens does it, it is the lens. Don't mess with
> mirror angle because you won't know THAT'S wrong until you get your
> pictures back and every one will be out of focus (even though each
> individual picture focused just fine in the finder).
> ----------------------------------------------------
> John Hermanson www.zuiko.com
> mail: omtech@xxxxxxxxx
> Camtech, Olympus Sales & Service since 1977
> 21 South Lane, Huntington NY 11743-4714
> 631-424-2121 For Free Olympus manuals,
> please call 1-800-221-3000
> ----------------------------------------------------
> ----- Original Message -----
> From: "Donald Shedrick" <shedridc@xxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Thursday, July 10, 2003 12:25 PM
> Subject: Re: [OM] Infinity Focus problem - 55mm f1.2
>
>
> > Good point, but my other lenses on the same body come to sharp
> > focus and my 'chromes from them are sharp under a magnifier, so I
> > figure it is the lens.
> >
> > --- Moose <olymoose@xxxxxxxxxxxxx> wrote:
> > > Consider also the possibility that your mirror is out of
> > > adjustment
> > >
> > > before taking a lens apart. If you have different bodies, check
> > > it out
> > > on them. Check out other lenses on the same body with the 2.5x.
> > > I bought
> > > a zoom a while ago and was checking it out when I discovered
> > > that it
> > > wouldn't focus to infinity at the wide end. I was getting all
> > > wound up
> > > about all the hassle of a return, but then thought to check it
> > > out on
> > > another body and vice versa. I had one body with the mirror out
> > > of adjustment. Remember the critical focal distance is lens to
> > > film and the
> > > viewfinder has to be adjusted to that.
> > >
> > > Moose
> > >
> > >
> > > >On Wed, 9 Jul 2003, Donald Shedrick wrote:
> > > >
> > > >>I just acquired a Zuiko 55mm f1.2 silver nose. It is a
> > > >beautiful>piece of glass and in near mint condition. But I
> > > >have noticed
> > > that
> > > >>when focusing on a distant object (~couple miles) I can't
> > > >quite
> > > get
> > > >>it in focus - <snip>
> >
> >
> > =====
> >
> >
> >
> >
> > __________________________________
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> >
> >
>
>
>
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>
>
--
------------------------------------------------
Thomas Heide Clausen
Civilingeniør i Datateknik (cand.polyt)
M.Sc in Computer Engineering
E-Mail: T.Clausen@xxxxxxxxxxxx
WWW: http://voop.free.fr/
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