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Re: [OM] Strange meter in my OM-1n

Subject: Re: [OM] Strange meter in my OM-1n
From: "John Hermanson" <omtech@xxxxxxxxx>
Date: Wed, 9 Oct 2002 08:53:46 -0400
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 
_________________________________
----- 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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