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Author Topic: Question about Dolby 3D and Real D Justin Hamaker Film God Posts: 2253 From: Lakeport, CA USA Registered: Jan 2004 posted 03-11-2010 04:53 AM                        Do these 3D systems use overlapped images like anaglyph 3D or do they use distinct images for each eye?  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 03-11-2010 08:59 AM                     Distinct. They alternate left and right eye 3 times per frame.  |  IP: Logged Mark J. Marshall Film God Posts: 3188 From: New Castle, DE, USA Registered: Aug 2002 posted 03-11-2010 09:52 AM                    Or they can use two projectors and put the overlapping eyes on the screen in sync.  |  IP: Logged Julio Roberto Jedi Master Film Handler Posts: 938 From: Madrid, Madrid, Spain Registered: Oct 2008 posted 03-11-2010 10:54 AM                    Yeap. Some dual-projection (even quadruple projection) Dolby installations put both eyes on the same place at the same time, overlapping. And RealD XLS does the same on Sony's 4K's. As does, of course, Imax, Technicolor 3D or dual-systems. But commonly, RealD, Dolby and Master Image alternate the images "quick enough" to try to make them seem "overlap" (which would be the ideal ...), but they never really do. XpanD is the only system that can never be used with two images exactly on the same place at the same time, as it defeats the purpose of the system entirely.  |  IP: Logged

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