It's completely mechanical movement.
_________________________________
John Hermanson www.zuiko.com
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
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----- Original Message -----
From: "Winsor Crosby" <wincros@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, October 07, 2002 1:53 PM
Subject: Re: [OM] Strange meter in my OM-1n
> >With the meter off, and therefore no current flowing in the circuit,
> >movement in the meter can only be caused by the coupling
> >arangements. Moving the film speed dial physically rotates the base
> >of the galvanometer, as does changing aperture and shutter speed.
> >This implies that the settings which centre the meter under these
> >conditions is the absolute minumum limit of possible measurement for
> >the meter (ie no current from the CdS cells).
> >When the meter is swithched on, the Cds cells become active, and the
> >meter needle will deflect upwards in proportion to the current. In
> >that case the reading should match the OM4 (ish). Never tried this
> >myself, so I don't know if 10 stops is the right answer.
> >
> >Julian
>
> I am surprised that there would be movement. Most better cameras of
> the era physically locked down the meter movement when switched off
> to avoid shock damage to the delicate jewelled movement. Did the
> OM1N meter have some special design that protected it from damage?
> --
> Winsor Crosby
> Long Beach, California
>
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