From: "John Hermanson" <omtech@xxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Thursday, December 27, 2001 4:01 PM
Subject: Re: [OM] Eyecup and diopter correction
> Adding almost "any" eyecup with a minus lens in it will probably bring it
> into range. If it doesn't quite come in now, add a -3 or -2, then
readjust.
> _________________________________
> John Hermanson
> Camtech, Olympus OM Service since 1977
> 21 South Lane, Huntington NY 11743-4714
> 631-424-2121 www.zuiko.com
> Call Olympus for FREE manuals!
> 1-800-221-3000
> _________________________________
> ----- Original Message -----
> From: "Scott Gomez" <scott@xxxxxxxxxxxxxxxxxxxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Thursday, December 27, 2001 2:34 PM
> Subject: [OM] Eyecup and diopter correction
>
>
> > I could use a little help here. As I mentioned in a message yesterday,
one
> > of the results of the Christmas photo exchange was that my girlfriend
has
> > conned me out of an OM-4. The problem that results is this:
> >
> > She can't get enough correction via the built-in adjustable viewfinder
> > correction. She says she needs about a -4.5 correction. The viewfinder
> range
> > is +1 to -3 according to the OM-4 Instructions Manual. The E-SIF lists
the
> > corrective range of the lenses for the eyecup as +2 to -5 *in
conjunction*
> > with the camera's own built in "bias". Based on what I read in the E-SIF
> > tables, the viewfinder is a default -2 diopters (I'm assuming that's for
> > NON-adjustable viewfinders).
> >
> > I think I need to buy her a "-5" lens (as Olympus marks them), as that
> > coupled with the viewfinder's built-in adjustment should give her enough
> > range to adjust, but I'm not sure. Does anyone know how to figure the
> proper
> > correction, based on adding one of the eyecups with a corrective lens?
Can
> I
> > use info from her eyeglasses prescription to figure it out?
> >
> > ---
> > Scott Gomez
> >
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> >
> >
>
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