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Re: [OM] mirror cutoff

Subject: Re: [OM] mirror cutoff
From: "Shawn Wright" <swright@xxxxxxxxxxxxxxx>
Date: Sat, 31 Oct 1998 09:46:59 -0800
On 31 Oct 98, at 5:11, William Sommerwerck wrote:

> "Secondly there were two notes against "Other Olympus Zuiko
> Interchangeable Lenses," the second of which was "Use of the Zuiko 600mm
> and 1000mm lenses is not recommended [with the OM2000] because a portion
> of the image area will not be visible in the viewfinder."
> 
> This rather cryptic remark refers to "mirror cutoff" -- something which
> I haven't heard of in years.
> 
> It's caused by the mirror being shorter than it has to be to intercept
> all the rays of light from the lens -- either because the manufacturer
> is cheap, or wants extra lens clearance when the mirror swings up.
> 
I always wondered about this comment. My OM-10 manual says something 
similar about the 600 and 1000 also.


Shawn & Janis Wright
swright@xxxxxxxxx
http://Zuiko.sls.bc.ca/~swright
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