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Author Topic: Aspect Ratios
Obi Nelson
Film Handler

Posts: 1
From: Tucson, AZ, United States
Registered: Nov 2019


 - posted 11-26-2019 06:37 PM      Profile for Obi Nelson   Email Obi Nelson   Send New Private Message       Edit/Delete Post 
If a movie is in the 2:1 ratio and in the 1.85 container, is there a way it can be projected on a scope screen that doesn't have masking without windowing with just pillarboxing? Or one would have to make a seperate scope dcp?

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 11-26-2019 07:20 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
You create a separate lens preset so it zooms out some more.

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Mike Croaro
Master Film Handler

Posts: 394
From: Millbrae, CA
Registered: Apr 2005


 - posted 11-26-2019 10:24 PM      Profile for Mike Croaro   Email Mike Croaro   Send New Private Message       Edit/Delete Post 
Steve, when you zoom the image out, does it slightly crop the top and bottom of the image?

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 11-27-2019 07:29 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
No. The image is letterboxed already in the Flat container. All you are doing is zooming out until that letterbox fits the height of your screen.

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Marcel Birgelen
Film God

Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012


 - posted 11-27-2019 07:49 AM      Profile for Marcel Birgelen   Email Marcel Birgelen   Send New Private Message       Edit/Delete Post 
And that's why you need a custom macro for all those fancy "newfangled" aspect ratios the directors come up with. In some rare cases you even need one for both a scope and flat container...

About a year ago, we played "The Grand Budapest Hotel", it started as a stupid joke, where we tried to correct the aspect ratio to fit the screen horizontally or vertically every time it changed on screen. After half-a-day programming cues, the result was one sea-sick ride, because every zoom action obviously blurred the image. We ended up with just adjusting the screen masking... which still was... idiotic and landed us about a dozen new positions. [Wink]

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 11-27-2019 08:59 AM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
Having 2.0:1 and 2.2:1 should be standard for new installations. We see a lot of 2.0:1 nowadays. Not much work to add them yourself, or when your tech visits you next time.

- Carsten

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Mark Campbell
Expert Film Handler

Posts: 148
From: Seattle, WA USA
Registered: Jul 2007


 - posted 11-27-2019 11:04 AM      Profile for Mark Campbell   Email Mark Campbell   Send New Private Message       Edit/Delete Post 
I was annoyed to no end when I saw Dunkirk at an AMC that still had a proper side-masking auditorium that AMC presented the film letterboxed in the 1.85 masking setting. Luckily it was my 3rd viewing as I had already seen it in 70mm and real IMAX.

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Daniel Schulz
Master Film Handler

Posts: 387
From: Los Angeles, CA USA
Registered: Sep 2003


 - posted 11-27-2019 07:03 PM      Profile for Daniel Schulz   Author's Homepage   Email Daniel Schulz   Send New Private Message       Edit/Delete Post 
quote: Steve Guttag
No. The image is letterboxed already in the Flat container. All you are doing is zooming out until that letterbox fits the height of your screen.
When you do this are the letterbox bars still projecting (and falling off the top and bottom of the screen and thus, hopefully, invisible), or is there some kind of electronic blanking involved so that those pixels are not illuminated?

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 11-27-2019 07:27 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
Typically, the letterbox bars should be digital zero, thus show the same black level als projector side electronic blanking (or 'cropping'). That depends a bit on the mastering software involved, but, so far I have never seen letterbox bars being above zero. Of course, depending on the type of projector, they would still be visible as dark grey on an unmasked screen. On a properly masked screen, that black should not be visible.

- Carsten

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