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Author Topic: Panavision 3D Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 10-28-2010 01:04 PM                     I just got a call to check out a theater for possible Panavision 3D. I called Panavision to get specs and I wanted to get some info. With the panavision 3D, there is no need for a silver screen. The problem I have is with their light output spec sheet chart. They want at least 30FL preferably 35 with no less than 75% on the sides. I have no problem with that. My problem is their lamp chart. For example, they say for a 26 foot wide screen, a 1600Watt bulb will do. Can you really get 30-35 with 75% on the sides?  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 10-28-2010 07:21 PM                        Yes, but not all lamphouses can do it. Easy for a new SuperLumex reflector, new bulb, new white screen and excellent porthole glass. Obviously, this is not typical. 80 ft/lamberts is obtainable with a SILVER screen, less is reasonable with a white screen. Louis  |  IP: Logged Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 10-28-2010 07:33 PM                     That's the problem. Most of these screens have old screens, old equipment, etc...  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 10-28-2010 09:32 PM                     I think that is the rub in many cases now days where theatre do not have a dealer with competent engineering departments to ensure equipment compatability with the desired specified end result there are many variables and that takes someone with experience to create a workable package  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 10-28-2010 10:41 PM                     Maybe throw a Technilight reflector in that Super Lume-X and a short gap 2500w bulb (might have to alter/modify the exhaust some for this conversion...) and it makes you wonder if these lumens numbers then can be achieved. -Monte  |  IP: Logged Jack Theakston Master Film Handler Posts: 411 From: New York, USA Registered: Sep 2007 posted 10-31-2010 02:43 AM                     What is the filter system for this? Even the Dolby 3-D system requires at least a high-gain white screen.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 10-31-2010 05:26 PM                     Dolby 3D does NOT require a high gain screen. Depending on the projector and screen size, a high gain screen is often used to get the center of the screen brighter but it will cause the illumination to vary across the screen. We have done Dolby 3D installations on matte-white screens...they look the best. Steve  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 11-01-2010 09:43 AM                     Steve... Dolby actually DOES reccomend a minimum 1.8 gain screen for their process as well as a maximum width of 45 feet. But the nice aspect is that one can use what ever one wants to... Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 11-01-2010 11:38 AM                     They only recommend it because of the miserable 10% throughput. It makes it somewhat necessary on larger screens...however, just like with silver screens...the gain is only over a narrow portion of the screen...leaving the rest too dark. Also, I noted that one is not REQUIRED to use a gain screen. Steve  |  IP: Logged Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 11-01-2010 03:40 PM                     So has anyone had one of these systems installed yet? I am in the process now of upgrading 2 screen's lamphouses. I am still waiting to hear from Panavision as to what light levels they need. In all their spec sheets, they still mention bulb size only and not foot lamberts. What level is needed for Technicolors 3D?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 11-01-2010 06:16 PM                     quote: Steve Guttag Also, I noted that one is not REQUIRED to use a gain screen. I noted that too if you read all the way through. Richard... The other company's light level requirements are similar. Mark  |  IP: Logged Jack Theakston Master Film Handler Posts: 411 From: New York, USA Registered: Sep 2007 posted 11-01-2010 07:11 PM                     Thank you for the info. But what does Panavision's system use?  |  IP: Logged Jack Theakston Master Film Handler Posts: 411 From: New York, USA Registered: Sep 2007 posted 11-02-2010 06:03 PM                     According to press releases, this seems to be a similar/same system as Dolby. One review said their output on a matte white was 7.5 fL. Anyone else get these sort of readings? Panavision claims that this system is compatible with film. My understanding was that the Dolby system was not. Is this true?  |  IP: Logged Richard May Phenomenal Film Handler Posts: 1057 From: Floral Park, NY USA Registered: Aug 2004 posted 11-02-2010 06:21 PM                     Panavision requires 30-35ft lamberts in the middle with around 75% of that on the sides. With their lens in place, you need a minimum of 4.5ft lamberts.  |  IP: Logged Scott Norwood Film God Posts: 8146 From: Boston, MA. USA (1774.21 miles northeast of Dallas) Registered: Jun 99 posted 11-03-2010 11:40 AM                        What happens if such a theatre (or a Tech 3D theatre) wants to show a 2D feature? Do they show it at 30fL, or do they reduce the image brightness by some method (reduced lamp current, defocusing lamp, ND filter on lens or gel on port glass, etc.)?  |  IP: Logged

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