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Re: [OM] Brigher Viewfinders

Subject: Re: [OM] Brigher Viewfinders
From: "Tom Scales" <tscales@xxxxxxxxxxxxx>
Date: Tue, 26 Dec 2000 10:18:49 -0600
I'm confused.  I thought one stop was the square root of 2 brighter (about
1.4) and TWO stops was twice as bright.

Am I missing something?

Tom

From: "Mark A. Thalman" <mthalman@xxxxxxxxxxxxx>


> ClassicVW@xxxxxxx wrote:
>
> > albert@xxxxxxxxxxx writes:
> >
> > << If what Machiel says is true, then that means a full ASA difference
> > means that the series 2 viewfinders are twice as bright if it
> > compensates the reading from ASA 400 to 200...  Or am I mistaken??
> >>>
> >
> > No, it means only a one stop difference.
> >
> A one stop difference is twice as bright.  Twice as bright means less to
> your eyes than it does to the film.
>
> I asked this question a few months ago and John H (from Camtech) answered
> that it is about 2/3 stop difference that won't affect the exposure in
> automatic mode (The mirror is up when it does the exposure reading, the
> viewfinder reading is just an estimate) but will be about 2/3 stop
> overexposed, which can be compensated for with the exposure/iso dial, when
> in manual mode.  Also if you buy and Olympus brand screen it will need to
be
> modified to fit in a model prior to the OM-2S.
> --
> Mark Thalman, markt@xxxxxxxxxxxx



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