P3D Re: Widelux projector

[michaelk@xxxxxxxxxxx (Michael Kersenbrock)]

> with.  I have a Stereo Vivid projector, and note that the polaroid filters are
> located inbetween the last condensing lens and the slide plane.  What about
> placing the filter between the slide and the projector lens? 

Some projectors put the polarizing filter between the slide and the projector
lens.  Most notably, the Compco Triad projector.

We have match-sized flare-ups on this subject from time to time, usually
resulting in maintaining pre-existing opinions (i.e.- liking the projector one
already has, which in turn influences the assumptions made which then in turn
justifies the original opinion).  :-)

Looking at the subject from a distance, it probably doesn't matter where 
you put the filters (meaning front of or behind the slide).

Mike K.

P.S. - If the reason to put the polaroids between the slide and the projection
       lens is so glass can be used to protect the filters, then I'd be a bit
       worried about the slides!  I'd think that the reason to put glass on the
       polarizing filters would be mostly to keep it flat.  I think Jon had said
       that glass RBT mounts make the film hotter than having the non-glass mount
       because the film then has airflow and glass (which normally has very bad
       heat conduction) would keep heat "in".  Or do I recall wrong?


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