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This topic comprises 9 pages: 1 2 3 4 5 6 7 8 9
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Topic: Tomorrowland aspect ratio 1:2.20
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Bobby Henderson
"Ask me about Trajan."
Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001
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posted 05-19-2015 09:29 AM
It makes no sense for the DCI people to mandate a 2.20:1 aspect ratio be shoe-horned into another container, other than compromising that format due to improperly designed digital projectors and movie theater screens. The 2.20:1 image needs to be as big as it can be for the projector's imaging chips. That means it needs to be full width.
Numbers, using 2K as a reference: 2.20:1 max size on chip: 2048 X 930 = 1904640 pixels 2.20:1 in flat container: 1998 X 908 = 1814184 pixels 2.20:1 in scope container: 1888 X 858 = 1619904 pixels
Obviously, putting 2.20:1 in a 'scope container is actually an even worse approach than sticking it into a flat container. Both approaches are inferior to allowing the 2.20:1 format to go full width on the imaging chip.
I've been beating the drum lately on just how much 'scope sucks in d-cinema compared to how great it was on 35mm -going from the biggest, brightest, highest resolution format on 4-perf 35mm to the smallest, lowest resolution format in d-cinema. It's really a shame. The DCI folks ought to be embarrassed by this considering how so many movies (I'd dare say a large majority) are framed in 'scope format. Making 'scope look its best should have been a top priority for d-cinema standards rather than being the lowest priority.
How would 2.20:1 do in a 1.25x anamorphic approach? The answer: even though it isn't as wide as full 2.39:1 scope it would still come out better than any of the approaches I listed above.
A 2.20:1 movie rendered for 1.25x anamorphic "Super 2K": 2K master: 2376 X 1080 = 2566080 pixels After 1.25x squeeze = 1900 X 1080 - 2052000 pixels
I think the DCI folks must have been stuck in some 1980's VHS style thinking by not going with an anamorphic approach in exhibition. They're protecting the 1.85:1 format at the expense of the other bigger formats. Flat was dominant 30 years ago. Scope currently dominates and it has been dominant for at least 15 or more years.
1.85:1 (1998 X 1080) in 1.25x anamorphic: 1598 X 1080 size = 1725840 pixels.
That's over 400,000 pixels less than the current flat container. The problem is not many movies are using the flat format. Scope is dominant. The sad thing is a 2K scope image, 2048 X 858 has 1757184 pixels. That's LESS pixels than 1.85:1 after it is put into a 1.25x anamorphic squeeze.
The DCI folks probably ran these numbers and chose to go spherical only anyway. It's probably all about cutting costs on lenses and what not, regardless of how much customers like myself are paying for the damned tickets at the box office.
The materials shown in a commercial movie theater need to be on a quality level significantly better than what someone can see on TV in the home. Right now d-cinema is not doing that. It really is too damned close to TV standards. Factor in some soft focus projection and the TV image at home might actually look better. As 4K starts to proliferate in home theater that's going to become a bigger problem. There are no focus & moire issues with a huge LED TV set.
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Jim Cassedy
Phenomenal Film Handler
Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 05-19-2015 03:53 PM
Here's another whole curve ball:
I just found out I'm doing at least one show of this in 35mm.
Of course, I won't get the print till the last minute.
Anybody have any idea of what the 35mm aspect ratio will be?
>ALSO- - I went out to one theater very early this morning to try & figure out a way to solve this aspect ratio issue in way that won't make the regular staff have to pull their heads outta their i-phones long enuf to miss a tweet.
As most of you already know, is that if you set the masking according to Disney's preferred framing chart, the pre-show FLAT trailers will have some cut-off at the top and the bottom of the image.
BUT- - I discovered that (at least at this location) - - if I build them a playlist using the SCOPE trailer versions, things actually looked OK.
. . .and I don't have to make new lens macros, or set up new cues, or write special instructions to the staff. (which would require doing it in a least 4 different languages and they'd still screw it up)
It's a wacky solution, but it seems to work.
I've got an advance, private (4k, Digital Atmos) screening tomorrow, but fortunately, I've already got all the projector macros & screen settings I need:
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