Pauls0627@xxxxxxx wrote:
>
> In a message dated 9/18/98 1:48:10 PM Eastern Daylight Time,
> pizzuto@xxxxxxxxxxxxxxx writes:
>
> << I think they use a material that reflects 1/3 of the
> light to the prism, and 2/3 to the film. The curtains then simply
> control when the exposure occurs. >>
>
> This is the way I understand it works too. They call it a "pellicle" mirror.
> Not sure if thats a technical term or a marketing one.
>
> Paul Schings
> Coventry, RI
>
Cannon has been using that system for quite a while. They used to
have a SLR model named something like "Pellix" (late sixties, I
think). Later there was a high-speed F1 using that system. Now
it's a high-speed EOS.
The great disadvantage is that the quality and cleanness of the
mirror affects the picture quality. It's fine for special purpose
cameras, but is IMHO too vulnerable for general use.
Regards
Lars
--
Lars Haven <mailto:lhaven@xxxxxxxxxxxxx> aka <lhaven@xxxxxxxxxxxx>
"When writing about women, one must dip one's pen in a rainbow"
D. Diderot
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