P3D Re: beam splitters

[SHIELDS@xxxxxxxxxxxxxxxxxx]

Nathan,

I have heard of people experimenting with attaching a beamsplitter
to a movie camera. You need to have manual control over the aperture,
or you will get either image overlapping or a wide black band between
images. For projection, you have to set up two front-surface mirrors
so that the projected light will bounce off them, each at a slightly
different angle, to superimpose the images on the screen. There have
to be special polarizers installed in the projector to polarize each
image differently. Then, since it's a movie and you can't turn the
film around like you can a slide in a slide projector, to unreverse
the images, you would need _another_ mirror to accomplish that. I'm
not saying it's impossible, but these are the issues you will have
to address. Attaching the splitter to the camera is pretty simple
but the rest gets very complicated. If you still want to try, good
luck!

Mark Shields

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