Few questions I have for 2.35 - AVS Forum
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post #1 of 6 Old 05-05-2012, 08:11 AM - Thread Starter
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I am new to the 2.35 aspect ratio. I have a few questions if you guys can please help me out.

1. Can this aspect ratio work with all movies and TV?
2. What is CIH?
3. Any other things I should know about this setup that would help.

Thanks

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post #2 of 6 Old 05-05-2012, 09:24 AM
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Quote:
Originally Posted by Pain Infliction View Post

1. Can this aspect ratio work with all movies and TV?

Television broadcast (HDTV) is NOT in the 2.35:1 ratio, it is 16:9 (1.85:1). A lot of movies are 1.85:1 and most all the "big" movies are scope at 2.35:1 or wider. If you use the zoom feature of some projectors you can have a 2.35 screen and zoom out for HDTV.....but you'll have black bars on the sides. Most folks prefer to have a masking system to cover up the sides so you can't see the side bars while showing a picture narrower than scope.

Quote:


2. What is CIH?

Constant Image Height. Refering to those of us you have (or will have) a scope width screen and use an anamorphic lens in the light path to stretch the image to the correct width....after a processor stretches the image veritically to remove the top and bottom black bars.

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3. Any other things I should know about this setup that would help.

Thanks

Ideal projector needs include lens memory and image processing (for the stretch) unless you use a stand alone video processor or player that will do the stretch.

Using the zoom method you don't need processing but lens memory, so you don't have to re adjust everytime you switch between ratios.

Scope is a more immersive feel. While designing my theater (still building) I painted on a HDTV ratio on the screen wall and it gave me the feel of just a big TV room. Then I widened the ration to scope and thought....this feels like a real cinema now. Plus if you do like me and use an acoustically transparent screen, you can go wider and place your speakers behind the screen. Now my room will REALLY feel like a theater!


Lens option = more expensive but you generally have a brighter picture

Zoom option - less expensive, but you are now projecting black bars outside the borders of your screen

Finally, read as many posts in this area as you can stand and get educated on CIH, scope, anamorphic lens, zooming, lens memory....ect.

BTW there are cheaper ways to do the lens option than a $6000 state of the art lens and electric slide. You just have to be patient and shop the preloved market. (think between $800 and $1500 range)
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post #3 of 6 Old 05-05-2012, 09:50 AM - Thread Starter
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Great advice and information! Thank you for your time to educate me.

MY THEATER......The Thompson Theater 11.9 channels

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post #4 of 6 Old 05-05-2012, 11:14 AM
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Here's the th CIH FAQ thread too that should help

http://www.avsforum.com/avs-vb/showthread.php?t=554901

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post #5 of 6 Old 05-05-2012, 12:06 PM - Thread Starter
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Excellent! Thanks!

MY THEATER......The Thompson Theater 11.9 channels

"Is not love not unlike the unlikely not it is unlikened to?"
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post #6 of 6 Old 05-06-2012, 02:13 PM
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Quote:
Originally Posted by Pain Infliction View Post

Excellent! Thanks!

You might want to give us a call.

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