Text 11763, 55 rader
Skriven 2010-11-06 22:44:51 av Michiel van der Vlist (2:280/5555)
     Kommentar till en text av Dale Shipp (1:261/1466.0)
Ärende: 3D hype
===============
Hello Dale,

On Friday November 05 2010 23:24, you wrote to me:

 MVDV>> rest of the time the glasses did not "synchronise". I exchanged
 MVDV>> them for another pair, but the problem persisted. For some
 MVDV>> reason they did not get the signal that synchronises the
 MVDV>> shutters. I was not the only one in the audience with that
 MVDV>> problem.

 DS> That would not have been a problem with the polaroid type of
 DS> presentation.

Indeed. The polaroid glasses are purelt passive. They do not depend on a
synchroniation signal, they do not have an empty battery and their is no
electronics that can fail.

 DS>   I wonder if the world will have a VCR vs Beta type of
 DS> thing on this?

Maybe. Maybe not...

 DS> Are there advantages of the shutter over the polaroid?

Yes. Up until now the polaroid system only works with beamers. And only with
dual beam beamers to be specific. The shutter system works with any exiting
imaging system that is fast enough to follow the shutter ferequency.

 DS> The demo that I watched was fine.  They had a pair of polaroid glasses
 DS> mounted in a frame that you leaned up to to watch.  I've seen it in
 DS> two different stores, and both times it was a video of a football
 DS> (soccer) match.

What I saw was a remake of Friday the 13th.

 DS>   The 3D was quite good -- in fact I suspect that it
 DS> had been enhanced.  IIRC, they can enhance the effect by having the
 DS> camera lenses further apart than the human eye and that causes an
 DS> increase in the perceived depth of the scene.

Quit possible. The stereoscopic effect only functions on short and medium
distances. Om larger distances, say above 50 meters. the difference between the
two images is two small to be noticeable by the naked human eye and the brain
takes its distance infor from other clues.

Regarding Friday the 13th, I found that the maker had been overdoing it a bit.
A similar effect existed when stereo sound was introduced. later om when stereo
sound became the norm rather than the exception, the stereo was not so
prominently present any more.


Cheers, Michiel

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