The OM-4 eyepeiece is glass. Without it, dust will get onto the five
surfaces between your eye and the prism and may make viewing more dificult.
John
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----- Original Message -----
From: John A. Lind <jlind@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Friday, July 09, 1999 1:19 PM
Subject: [OM] OM-4 Viewfinder Question
> John H. mentioned a while back the plastic (?) window in the OM-4
> viewfinder is a bit fragile. Well, mine went a couple of weeks ago and I
> don't even know how it happened . . . didn't drop or jar the camera and it
> was in the never-ready case. I was able to extract the three large pieces
> it split into (reassembled them so I know I got all of them).
>
> The question now is how essential is the plastic window? I've shot four
> rolls through without any apparent affect on the dioptric correction or
> focus, so it doesn't *appear* to have an essential function for camera
> operation. I am left wondering if it is essential to sealing up and
> keeping contamination out of the prism area, or perhaps some other
> important function I'm not aware of, and how critical it might be to have
> it replaced. In other words, it this something that doesn't really need
to
> be fixed, can wait for a while when it is convenient, or should be
repaired
> soonest?
>
> Thanks,
> -- John
>
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