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Re: simple do-it-yourself 3d movies?


  • From: P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>
  • Subject: Re: simple do-it-yourself 3d movies?
  • Date: Sun, 11 May 1997 20:14:50 -0400

>
>>Rig a stand to hold the
>>beam-splitter in from of the projector lens.  Put polarizing filters in
>>front of the beam-splitter.  Adjust the outside mirrors on the
>>beam-splitter so the split images are correctly superimposed on the
>>screen.  Put on polarized glasses.  Enjoy.  Can anyone see the flaw in
>>this plan?

Hasn't there been mention of some commercial units here on P3D that
do exactly that. I remember Harry Poster mentioning a system like
that for sale awhile back. It was an ELMO 3D system that was for the
Super 8 film projector.

>Mind you, this is all from the gut and could be entirely wrong.  Certainly
>an experiment would be worthwhile.  (I've been planning to try something
>like this with videotape and a mirror/real-beamsplitter combo on the TV
>for playback.)

Yea it works but as you know there are severe limitations in what
focal length (as well as apertures for film cameras) and distances
that this will work. I have filmed, holding the beamsplitter gizmo
in one hand and video cam in other, going down some narrow stairs.
No I didn't trip and fall down. Anyways I viewed it on a small
B&W set and it worked pretty well. Also have tried taking snapshots
this way by connecting it to a snappy. This worked better except for
the evident keystoning.  

Gabriel


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