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This topic comprises 4 pages: 1 2 3 4
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Author
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Topic: Mission Impossible 4 in wrong aspect ratio? And more...
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Dave Macaulay
Film God

Posts: 2321
From: Toronto, Canada
Registered: Apr 2001
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posted 02-04-2012 05:52 PM
Nope. I will work for whatever place will pay me, basically. I don't decide about masking.
I actually prefer to have movable masking, it looks more professional to me. But with digital, and sharp cutoff lines, it isn't much required for a decent looking picture. I know techs who hate floating screen no-masking setups too: some predicted the management would be forced to install masking because of the flood of complaints. Nope.
I've read the DCI specs a few times and the only mention of masking refers to a required automation interface to allow controlling stuff like dimmers, curtains, masking etc. Please point me to where masking is required. I have yet to see DCI police come checking on compliance with requirements that I do know of. So that seems moot anyway.
Realistically, with a sharp edged digital image and the savings from eliminating the screen hardware, rigging time, extra power and control wiring, and maintenance... movable masking is hard to sell on a new build. And the screen size can be maximized for the room, you don't need to have stacking space for masking cloth. having the flat image full height with some pillarboxing & scope image full width with letterboxing obviously offends you but It's the way of the future I think. What I prefer is one thing, what the owners decide thay will pay for is quite another.
Sam, I don't see how a bit of white is reducing contrast. I understand what causes contrast loss, and theoretically having a white surface reflects light back to the window which reflects it back to the screen... but unless you painted the auditorium white the additional light on screen is trivial. Letting the audience see on a big unmasked space how bright your "black" is seems a mistake to me but I see a lot of rooms with LED stair lights that destroy the black level anyway and my advice to correct that is usually ignored, particularly by chains. Independents seem to care a lot more about the presentation.
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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99
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posted 02-04-2012 06:02 PM
quote: Dave Macaulay I have yet to see DCI police come checking on compliance with requirements that I do know of.
Bingo! That's the problem. The studios are getting everyone's panties in a wad over the DCI spec, and NOBODY is checking and NOBODY is getting penalized for not following it.
quote: DCI spec 8.3.3.3 Screen Characteristics
The screen is required to be non-specular and equally reflective over the entire visible spectrum. The screen is required to have variable black masking, adjustable to tightly frame the projected image. This is required to minimally include 1.85:1 or 2.39:1 image formats. Masking for other formats is optional.
The issue is some theater owners are "deciding" what a proper presentation is, cutting costs and providing a worse presentation while charging more with a silly X name to the auditorium. They are doing it because they know they can get away with it. All they have to do is create some silly branding and the public is so stupid they will continue to come like lemmings.
In fairness I totally understand the theater owner's point of view in respect to costs. After all they have just had digital forced down their throat, whether they wanted to switch or not and money is probably tight...but a new build is a new build. They are simply using the sharp edge of digital as an excuse to not design the auditorium properly.
Then again most people don't install baffle walls either, yet they brag about their big sound system (that kinda sucks without it).
And while they're at it, let's hang the projector from the ceiling and to hell with precise calibration since "nobody complains", right?
This isn't an attack at you Dave. Sadly this is the way the industry is heading...and it will be its death. Presentations will get worse and worse at the majority of the theaters. Fortunately I don't have to deal with this much, as our clients tend to be the ones that properly analyze what they are getting with a system and want to do the job right.
Your comment on led stair lighting is dead on target. It is SO EASY to fix it by mounting them on the walls with a proper light baffle to angle the light down and away from the screen...but they just don't listen.
Getting back to our original debate though, I don't know what you are using to measure contrast, but I can assure you the difference is plainly visible with my eyes. Want to know what else kills contrast? Those awful HB lenses Christie is sending out with their series 2 projectors! Compare one to a series 1 HC lens...it is night and day with respect to contrast. Color fringing is so awful on the short lenses it is impossible to precisely align the convergence.
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This topic comprises 4 pages: 1 2 3 4
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