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Author Topic: Dolby acquires Doremi Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 02-25-2014 02:53 PM                     Not yet, at least that was not the case with 4.6 and I can't remember on top of my head that 4.7 brought in the feature.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-26-2014 12:17 AM                     Nope, not yet...but clearly it is in the future.  |  IP: Logged Antti Nayha Master Film Handler Posts: 268 From: Helsinki, Finland Registered: Oct 2008 posted 02-26-2014 01:05 AM                     Is there any official word from Dolby that a dual IMB configuration will be supported via a future software update? Let's say I'm putting together a dual-projector 4K setup that will be used for 1) single-projector 4K 2D, and 2) dual-projector 2K 3D. Can I get a Dolby DSS200 (since I prefer it to DSS220) and two Cat 745's, so that in "mode 1" it's feeding the single projector with a 4K image via Ethernet, and in "mode 2" it's feeding each projector with a 2K image via HD-SDI? (Of course, in that scenario one of the IMB's would be unnecessary without a future software update allowing true dual IMB operation.)  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-26-2014 06:05 AM                     Dolby is not only the manufacturer of this IMB, but also sells ATMOS for premium audio and Dolby 3D for premium 3D. With the latter being so light-inefficient, they have no other choice than to support dual IMB in order to supply stacked/dual projector configurations for large screens. - Carsten  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-26-2014 06:42 AM                     No, no official word but if you look at the ports on it...the hardware is already there. As for Dolby 3D...the least efficient of the bunch...though in many ways the best. In the event that laser light really starts to replace xenon, then Dolby shoots to one of the, if not the most efficient since filtration will not be required in the projector anymore.  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 02-26-2014 10:12 AM                     Why are D3D filter wheels no longer required with laser lamphouses?  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-26-2014 10:18 AM                     They would need to supply at least 6 distinct and well chosen different laser wavelengths, all despeckled, in order to get it going. Unfortunately, laser wavelenghts are not so easy to choose arbitrarily at the power requirements needed for projection. Any standard LIP will NOT be able to support Dolby 3D at all, because there is no spectrum to be split between the two eyes. A Dolby wheel in a standard LIP is useless. It needs a broad spectrum light source. - Carsten  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 02-26-2014 12:21 PM                     Well - that's a bit contradictory: D3D will be the best vs D3D will not be possible. Any clarity?  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 02-26-2014 04:00 PM                     Well, once they do solve the issue with the 6 distinct laser lines, it will probably be 'the best'. From what I know about laser technology, it could take a while to accomplish this. Plus, Dolby bought infitec to apply their technology to the cinema market, but they do not develop LIP or LIP sources themselves. They would have to wait for LLE, Necsel, etc. to develop a very specialized light source for their limited market. Polarizing laser beams in order to use it like RealD, Masterimage or Volfoni is actually easier than that, so IMAX will certainly continue to use that 3D approach with their first LIP - but then the weakest point again becomes or remains the low separation efficiency of the screen. It will be a brighter 3D on large screens, but not necessarily better. We know that polarizing 3D can not be presented much brighter than is available now because of more visible ghosting. Dolbys light efficiency would improve considerably, and the (already good enough) separation will probably improve even further. If they succeed with suitable light sources. - Carsten  |  IP: Logged

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