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Author Topic: 3-D projection Peter Kerchinsky Master Film Handler Posts: 326 From: Seattle, WA, USA Registered: Jan 2002 posted 05-01-2002 04:31 AM                     Fred is correct. "Invaders From Mars" was originally released by Fox and was in some god-awful 2 color process, red and green. Not sure if there was a name for that process, but looked like the "rip-off" 3D process where you wore the red and blue glasses. The "original" 3D process I'm familiar with used 2 projectors with Poloraized glasses. I ran some of the prints that used the Stereovision process, above and below and the side by side system and, to put it very bluntly, they sucked. The biggest problem we had with that system was loss of light even though we upped the 2000W to about 3000. Too many lenses to deal with. Focus.........there was none! I would really be surprised to hear any distributor still has 2 strip 3D films available. Anyone know for sure?  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 05-01-2002 09:17 AM                        The IMAX "PSE" headset uses liquid crystal shutters syncronized to the projector shutters via an infrared receiver. Also provides a "Personal Sound Environment" to supplement the speaker sound. Advantage is that you can turn your head and not get "ghosting" of the two images by lost polarization: http://www.imax.com/innovations/theatre/IMAX_3D/index.html http://www.imax.com/innovations/theatre/IMAX_PSE/index.html http://www.imax.com/raceforatlantis/tech.html Many IMAX and other large format theatres still use polarized glasses, usually much higher quality than the cheap "throw away" ones used for 35mm, so they get washed and reused. ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243 e-mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion  |  IP: Logged

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