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Frankenstein problems


  • From: P3D Marvin Jones <Campfire@xxxxxxxxxxxxxx>
  • Subject: Frankenstein problems
  • Date: Tue, 9 Sep 1997 15:59:12 -0400

Message text written by INTERNET:photo-3d@xxxxxxxxxxxxxxxxxxxxxxxx
>I imagine the problems were caused by the frame sequence getting out of
whack after a splice- how exactly do single strip systems work, anyway? =

Apperently this print was Paul Morrisey's (the director) personal copy- I=

wonder if he's watched it lately.<

Single-strip 3D is prone to problems, but going completely "flat" as you
describe is not physically possible. The most common problem is going
pseudo, which I suppose some people misinterpret as being flat. Basically=

the two images are printed, one above the other, on a standard 35mm film
frame split horizontally in the middle. The lens then separates them and
superimposes them on the screen, applying the polarization in the process=
=2E
Therefore it is depressingly easy to get the film two sprockets out of
synch (a frame is four sprockets high), either by a sloppy splice or
improper threading of the film. This causes the left-eye image from one
frame to be projected for the right eye and the right-eye image from the
next frame being projected to the left eye -- result, pseudo stereo a
split-second out of synch.


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