XPost: rec.audio.pro, comp.dsp   
   From: kludge@panix.com   
      
   Bill Graham  wrote:   
   >   
   >The only " true stereo" television I ever saw was in a radiation lab, where   
   >they handled radioactive materials remotely with robot arms and hands, and   
   >needed the stereo so they could judge distance and not drop stuff. They had   
   >two cameras 2-1/2 inches apart, and two seperte channels....One for each   
   >eye. The picture you got was just like being there, and when you put your   
   >hand in the glove and reached out to pick up something, the robot arm   
   >reached out just like you did. All this red and green glasses stuff they   
   >were showing the kids in the movies was a joke compared to that.   
      
   If you have never seen real polarized stereo films, you need to watch one.   
   It is a very different experience.   
      
   When all those 1950s 3-D films were originally screened on their first run,   
   they were shown in polarized formats.  This required either two linked   
   projectors with a bicycle chain keeping them in synch and polarizers on   
   the lenses, or a single-strip system where a mirror box would be placed   
   in front of the screen the direct the top and bottom halves of the frame   
   (each one image) through different polarizers and onto the screen.  It also   
   required a silver screen that would reflect the image properly polarized.   
      
   Because this arrangement was not possible at smaller theatres, when those   
   films went on their second run out into the hinterlands they were often shown   
   in anaglyph red-green or red-blue format.  The anaglyph systems looked   
   terrible and nobody at the studios ever took them as anything other than   
   a poor stepchild of regular polarized-image 3-D.   
      
   You will occasionally still see those old films shown in proper polarized   
   3-D now and then.  I work at a science fiction convention up in Boston where   
   a couple years ago we ran It Came From Outer Space in proper 3-D.  It was   
   a very different thing than the anaglyph and folks in the audience were amazed   
   by it.   
   --scott   
      
   --   
   "C'est un Nagra. C'est suisse, et tres, tres precis."   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)