T3D Re: Rear Projection Stereo

[bercov@xxxxxxxxxxx (John Bercovitz)]

John B:
>> I wonder if using a shift lens (also very expensive) on the projector
>> with the normal type of screen would be a better solution to the
>> problem of getting close enough to the image.

Jim C:
> Huh?  :-)

If you use a shift projection lens (Zeiss makes 'em for 6x6 format),
you can put your projector way up high and then instead of tilting
the projector down to put the image on screen, you shift the lens
down keeping it level, until the image is on the screen.  Gets rid
of projection keystoning.

John B


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