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Re: [OM] OM10 Mirror lockup

Subject: Re: [OM] OM10 Mirror lockup
From: "Ian M. Stewart" <ims@xxxxxxxxxxxxxxxxxxx>
Date: Mon, 23 Mar 1998 13:05:15 +0000
At 07:42 22/03/98 -0500, John Hermanson wrote:
>That halfway mirror lock is what allows the self timer to work.  The
mirror is
>held partway up by a latch controlled by another combination magnet.  This is
>an alectromagnet with a small permanent magnet (on the moving part) that
>sticcks to the metal in the uncharged electromagnet.  When the self timer
term
>is up, a quick "blip" of power is sent to the electromagnet  (which is the
>opposite pole to the permanent  magnet) which quickly repels the latch and
>allows the mirror up to fire the shutter.
>This system is used in the OM-10, G and F, and also indicates weak batteries,
>no batteries, or basic electriacl malfunction.
>
>John

Thank you John for the detailed response.  Gary seems to think that some
Scotsman was responsible for the design, which I somehow don't believe. :-)

Do you know _why_ they built it this way?  Was it just for cheapness?

--

Ian  <IMS>
                  OM Tyro - please point my lens in the right direction.
mailto:ims@xxxxxxxxxxxxx

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