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Re: [OM] More on LCD shutters

Subject: Re: [OM] More on LCD shutters
From: Konrad Pizzuto <pizzuto@xxxxxxxxxxxxxxx>
Date: Fri, 18 Sep 1998 19:53:09 -0700
I'm butting in !!!!

I just touched on these emails lightly and I remembered that the Canon
EOS-1N RS uses a special type of mirror that does not flip up to expose
the film, but sort of reduces its reflectance or something.  This allows
the person to have a continuous view of what's happening even during the
actual exposure.  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.

Ling do you know anything about this?  Or anyone else perhaps?  I'm
interested in this technology.
I hope I haven't side tracked too much.

thanks

Konrad


> > C.H.Ling wrote:
> >
> > I am not sure, but LCD is slow and it will not provide better reflection
> > (to the FC and prism).
> >
> >
> > They needn't be slow: we are working on very fast devices able to do
> video frame rate refresh speeds.
> >
> > Chris
> 
> But I expect a shutter to be work at 1/4000 or even 1/10,000 sec.
> 
> C.H.Ling
> 
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