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# 2:40:1 screen or 2:35:1 - Page 2

Have you actually calculated the difference/size for 2.35 vs. 2.40 for your particular screen size? How big are they?

B.
I don't have my permanent screen yet but 2:40:1 is .8 inches shorter and .4 inches wider.
Quote:
Originally Posted by Bardia

I don't have my permanent screen yet but 2:40:1 is .8 inches shorter and .4 inches wider.

Why are you even worrying about it? Less than half an inch high and less than a quarter of inch wide?

I routinely overscan that amount and mask off. If you are using a lens on a flat screen I would think that this would be necessary anyway to help eliminate issues at the sides anyhow...

B.
Actually 2.40:1 is trully 2.39:1, there is no real "2.40:1".

Since the best source we use atm is still Blu-ray, hence 1920x1080, it should be (in pixels):

1920x1080 = 1.78:1
1920x1038 = 1.85:1
1920x817 = 2.35:1
1920x810 = 2.37:1
1920x803 = 2.39:1
1920x800 = 2.40:1

As consumer 4K:
3840x2160 = 1.78:1
3840x2076 = 1.85:1
3840x1634 = 2.35:1
3840x1620 = 2.37:1
3840x1606 = 2.39:1
3840x1600 = 2.40:1
Quote:

Actually 2.40:1 is trully 2.39:1, there is no real "2.40:1".

It's 2.39 and change, which is rounded to 2.4.
I've decided to go with a 2:35 screen in the theater I'm building. At least half of what we watch in there will be 16:9 content, and that will give me the largest possible picture, no? I figure I'll just overscan the sides a teensy-tiny bit with scope content; shouldn't even be noticable on the black velvet screen frame. I'll be using an A-lens (Prismasonic C-150) with scope content as well.
Quote:
Originally Posted by archiguy

I've decided to go with a 2:35 screen in the theater I'm building. At least half of what we watch in there will be 16:9 content, and that will give me the largest possible picture, no? I figure I'll just overscan the sides a teensy-tiny bit with scope content; shouldn't even be noticable on the black velvet screen frame. I'll be using an A-lens (Prismasonic C-150) with scope content as well.

I agree. I think I will do the same. Yes you will have about an inch taller image when viewing 16:9 content
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