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Author Topic: Rear Projection Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-01-2003 06:21 PM                     The brightness of modern video projectors pretty much negates the need for doubling the projectors (Which bring about their own problems) Screen surfaces for rear-screen are constantly getting better. We recently did a rear-screen theatre in Fayettville, NC (Cameo) and the quality of the image was stunning. 80 lines/mm in virtually all targets (ISCO Ultra-Star Plus lenses) and very little hot spotting (Harkness Translite Natural)...it was like a 1.3 gain screen in terms of appearance to the audience. However, that surface was optimized to minimize hot spotting in low-light conditions (movie theatre lighting). There are other surfaces that are better for high-ambiant lighting (lobbies) that will hot spot much more. Steve  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 10-23-2004 07:32 PM                 It has been 510 days since the last post.  |  IP: Logged Tom Sauter Expert Film Handler Posts: 163 From: Buffalo, NY, USA Registered: Sep 2000 posted 10-23-2004 07:32 PM                        I'll bump up this old topic since there's little discussion of rear projection topics. Question: All things being equal: the lamphouse wattage, lenses and screen gains, and we're in a perfect world, will you get the same luminance if you project onto a matte white screen, then turn the whole setup around and project onto a rear projection surface?  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 10-23-2004 07:36 PM                        No. You can't make a translucent (for rear projection) gain screen either.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 10-24-2004 12:38 PM                     Paul, You can get custom front surface mirrors fror Precision Glass and Optics in Santa Anna,CA. I believe www.pgo.com We get our Starphire Glass from them. But thats a timy digital projector you're running there first off. We have quite a few customers running digital projectors in lobby set ups very sucessfully. They are running 450 watt or larger Toshibas and Sanyos in most cases except the smaller locations. Jordon Commons runs a large digital unit and has about a 20 foot wide screen in its lobby area... but the place is huge lobby wise by most standards as large as many good size two story shopping malls! Practicality has alot to do with this sort of thing and digital is by far the most practical route. One setup that a customer recently saw at a Harkins Theatre in Phoenix was a full booth set up above the ticket selling area and projecting across the lobby to a screen on the opposite wall. The "out in the open" setup of the booth would certainly fascinate alot of customers. This particuluar setup was accessable from a spiral stair case and they used a platter, not an endless loop. That makes it alot easier to do make up's and tear downs on a weekly basis or more often sometimes. Loops suck in that regard, especially if you forget to run the last show as if it were a platter. Mark @ CLACO  |  IP: Logged Adam Martin I'm not even gonna point out the irony. Posts: 3686 From: Dallas, TX Registered: Nov 2000 posted 10-24-2004 03:37 PM                     Photos from Harkins Arizona Mills 24 in Tempe, Arizona, that Mark is talking about. Harkins actually has this setup in a number of locations.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 10-24-2004 03:52 PM                     They don't actually let cutomers walk up on that platform, do they? Most people can't seem to "not touch" stuff. I can only imagine the kind of things that could happen.  |  IP: Logged Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 10-24-2004 04:17 PM                    Charge them a buck a piece. It would pay for that setup.  |  IP: Logged Jason Miller Expert Film Handler Posts: 241 From: Little Rock, AR, Registered: Mar 2004 posted 10-24-2004 06:23 PM                    Does that projector actually make that the Arizona Mills 25? if a brainwrap happens do you get to point at it and say "SEE... that is the crap that I get to deal with upstairs. now quit yer bitchin!"  |  IP: Logged Adam Martin I'm not even gonna point out the irony. Posts: 3686 From: Dallas, TX Registered: Nov 2000 posted 10-25-2004 06:25 PM                     Note the black cage around the spiral staircase.  |  IP: Logged Kenneth Wuepper Phenomenal Film Handler Posts: 1026 From: Saginaw, MI, USA Registered: Feb 2002 posted 10-26-2004 07:24 AM                     What is the size of that screen? It looks like it is at least 2.85:1 ratio. I don't see any speakers for the sound. Where are they and how loudly do they play? KEN  |  IP: Logged Cory Isemann Jedi Master Film Handler Posts: 500 From: White Plains, MD, USA Registered: Jun 2004 posted 10-26-2004 08:58 AM                        looks to me like there are speakers to the left and right of the screen.  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 10-26-2004 05:30 PM                        The screen measures 2.35:1.  |  IP: Logged Steve Scott Phenomenal Film Handler Posts: 1300 From: Minneapolis, MN Registered: Sep 2000 posted 10-26-2004 06:01 PM                     So, is the trailer pack 90 minutes so they can rethread it after every rush? That's not an ELF, for sure. To me, it takes the magic further out of the experience. Our lobby has a huge open space on the back center wall, and on the other side of that wall is the booth. If there wasn't only five and a half feet between that wall and my #10 projector, it'd be ideal for rear projection. But we do have two 32" TVs below that wall, so we've already got stereo vision. Good for me, for now  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 10-27-2004 02:03 AM                        Am I seeing things, or is the R in MIRAMAX backwards?  |  IP: Logged

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