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Author Topic: Big 35mm screens Jack Ondracek Film God Posts: 2348 From: Port Orchard, WA, USA Registered: Oct 2002 posted 03-20-2008 12:21 PM                        Hi, David. I would agree with your observations of the X-60 series lamphouses. Mine had aged to the point that they needed to be torn down and rebuilt. If I had the time and inclination to do that, I probably would still be happily running them. Instead, I went another direction and replaced them over time. Of the three I had, the one with the glass reflector was by far the best. On the other hand, my understanding is you can't get those anymore, and that would have been a real problem for me, if a bulb had blown.  |  IP: Logged Jeffry L. Johnson Jedi Master Film Handler Posts: 809 From: Cleveland, Ohio, USA Registered: Apr 2000 posted 03-22-2008 01:33 PM                        quote: Louis Bornwasser smpte std: drive in: 4-6 ft/lambert. No, the SMPTE standard is 16 footlamberts. RP 12, Screen Luminance for Drive-In Theaters, clause 4.2 allows a minimum luminance at the center of the screen of 7 fL as measured from the central position. Clause 4.3 states: quote: When maximum compromise must be made... the luminance at the center of the screen, measured from any car position, shall in no case be less than 4.5 fL (15 cd/m^2).  |  IP: Logged Ron Funderburg Jedi Master Film Handler Posts: 814 From: Chickasha, Oklahoma, USA Registered: Nov 2007 posted 03-22-2008 01:53 PM                        When I owned theaters I converted my 8 screen theater to use Technolight at 2000 watt. We had 38 feet wide screens and only about 50 foot throws and the 2000's in the lamp houses we had just were not getting enough light on the screens. They changed out the guts of the light house and put in their technolight glass reflectors and the light amount on the screen was wonderful. We were told that the 2000 watt bulb would now put out as much a 3000 watt for that distance and size of screen. I was happy with the picture on the screen but I never did find out if the claim from technolight was true.  |  IP: Logged

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