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P3D Re: Question About Zoom Lenses For Stereo Projectors

  • From: "Dr. George A. Themelis" <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
  • Subject: P3D Re: Question About Zoom Lenses For Stereo Projectors
  • Date: Tue, 24 Aug 1999 04:44:49 +0000
>Is there any suggestions for getting a larger image on the screen 
>without having to have the projector distance so long, like zoom 
>lenses used on movie projectors?

What you need is shorter focal length lenses.  I am not sure
what lenses your Nord projector uses... Are they 4" or 5"?

The TDC projectors come with either 4" or 5" lenses which is
common for stereo projectors from the '50s.  My Brackett
Dissolver has 100mm lenses (4").  It is unusual to get something
shorter than this in a 35mm stereo projector.

George Themelis


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