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Author Topic: Detailed information about the "Optiverter" Max Biela Film Handler Posts: 89 From: Dortmund, Germany Registered: Sep 2003 posted 07-31-2008 04:01 AM                     Hi, does anybody have more detailed information about the optiverter? Or even pictures? It would be interesting to know how they prevented projector noise to escape from the booth.. Thanks Max  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 07-31-2008 09:16 PM                       This was the Wil-Kin mirror thing that went between the two projectors? For the ultimate theatre, Omnivision (or whatever they called it)?  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 08-01-2008 01:04 AM                     The optiverter was part of the UltraVision premium projection concept. the unit allowed two projectors to hit the screen from a perfect centerpoint of a curved screen. It involved matching lenses and reflectors. Glenn Berggren who later was involved in the ISCO and Schneider lens designs currently in use, worked on the system when he was with Wil-kin. Single projector with a film transport makes this concept obsolete  |  IP: Logged Max Biela Film Handler Posts: 89 From: Dortmund, Germany Registered: Sep 2003 posted 08-01-2008 02:40 AM                     Yes, but how did it actually look like? I need to know the exact arrangement of the mirrors. John P. mentioned some photos in an old SMPTE book IIRC...  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 08-01-2008 05:52 AM                        The projectors were "toed in" at about 45 degrees. toward the wall's perfect centerline. At that location was a solenoid operated prism, much like an old telecine at a TV station. (yellow when dirty like old Superscope anamorphics) Louis  |  IP: Logged Mitchell Dvoskin Phenomenal Film Handler Posts: 1869 From: West Milford, NJ, USA Registered: Jan 2001 posted 08-02-2008 10:14 AM                     From SMPTE's 1969 Motion Picture Projection & Theatre Presentation Manual: "Ultra-Vision is a new projection system specifically designed to eliminate projection and viewing problems encountered with any 35mm or 70mm picture presentation. It is claimed that with its use total sharpness, contrast and color control are substantially superior with any format, and the the results are measurable."  |  IP: Logged Andy Frodsham Expert Film Handler Posts: 238 From: Stoke on Trent, Staffs, UK Registered: Nov 2006 posted 08-03-2008 07:24 AM                     I assume, perhaps wrongly, that the extra prisms had an adverse effect on the picture quality? Great idea though. We have a really short throw in our theatre and such a device would help a lot!!!  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 08-06-2008 09:43 PM                     Ta Dah! I knew I had a picture of an "OPTIVERTER" here somewhere. This picture, which shows the Optiverter set-up in the Terrace Theater in Hickory North Carolina, is from "The Motion Picture Projection and Theater Presentation Manual" published by SMPTE in 1969. EDIT: OOPS! Obviously, I didn't see the previous message before posting this!  |  IP: Logged Max Biela Film Handler Posts: 89 From: Dortmund, Germany Registered: Sep 2003 posted 08-07-2008 03:31 AM                     Thanks everyone  |  IP: Logged

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