Re: Projection w/out glasses

[norml@xxxxxxxxxxxxx (Norm Lehfeldt)]

What Harold says is true for correctly mounted images, of course.

But how about this idea?

Use a screen masked down a couple of inches on all sides. The window is thus
firmly anchored at the plane of the screen and adjustments for proper image
within the window--even with severe vertical misalignment in the
mounting--are easily made. Ideally, for this to work the slides would have
to be all in mounts of the same size--that is all "normal" or all
"close-up," etc. In practice, I think you could mask the screen so that
normal and medium slides could be accomodated during the same show. And even
if some narrower images were interspersed, you would be better off than with
an unmasked screen because you would still have the advantage of the masks
on the top and bottom of the screen.

To try this out, just project your images a little larger than your screen
on all sides. Don't worry about the spill on the walls, drapes, etc. Since
it is depolarized and is probably falling on surfaces darker than the screen
it is not very distracting.

Of course, in competition I suppose we need to be able to see the edges of
the images if mounting is being judged.

>Perhaps our many knowledgeable participants can clarify one thing
>for me-- is it true that if the two frames fall on the same screen
>space (no displacement) then the edge of the frame will be seen
>at the plane of the screen and the stereo window will be the same
>as when viewed in a hand held viewer? If so then projectionists
>should lift their glasses ( and raise a toast) then align the
>edges of the two images.
>
>Back to work...
>Harold.


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