I would bet that if you keep the brightness the same and increase the
magnification then the apparent distance to the image decreases. There is
probably something about the apparent distance to the screen that becomes a
problem if it is too short. The tradeoffs made are probably good for the
population as a whole but some people would probably be better with
different tradeoffs.
The amount of light hitting the screen would be determined by the lens on
the camera. If that same amount of light is spread over a wider area, the
intensity would be less for the same viewing distance. IRRC the apparent
distance to the OM screen is over 3 feet but the image looks bigger than the
screen would at 3 feet.
-jeff
adding more questions than answers
----- Original Message -----
From: "AG Schnozz" <agschnozz@xxxxxxxxx>
>
> The focus screens of most DSLRs are smaller than 35mm focusing
> screens. That is absolutely true! My only point that I was
> trying to make is that you can make the apparent focus screen
> size bigger by hanging a larger magnifying glass in the
> viewfinder and that doesn't affect brightness.
>
>
> AG
>
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