CIH Explained - AVS Forum
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post #1 of 6 Old 07-29-2013, 08:37 PM - Thread Starter
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Here's some good info at HD Digest via Josh Z.
http://www.highdefdigest.com/blog/constant-image-height-refresher-2013/
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post #2 of 6 Old 07-30-2013, 09:35 AM
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Josh has always done an excellent job explaining the fundamentals of the CIH concept. This is a great place for anyone to start learning about this aspect of the home theater hobby (no pun intended).
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post #3 of 6 Old 07-31-2013, 12:20 PM
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A follow-up piece for those interested:

http://www.highdefdigest.com/blog/constant-image-height-refresher-2013-part2/
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post #4 of 6 Old 07-31-2013, 07:08 PM
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That is a good blog Josh.

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I love my Constant Image Height system!
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post #5 of 6 Old 08-21-2013, 01:20 PM
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Panamorph CineVista review:

http://www.highdefdigest.com/blog/panamorph-cinevista-review/

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post #6 of 6 Old 09-14-2013, 06:52 PM
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Quote:
Originally Posted by Josh Z View Post

Panamorph CineVista review:

http://www.highdefdigest.com/blog/panamorph-cinevista-review/

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Originally Posted by CAVX View Post

That is a good blog Josh.

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Originally Posted by Josh Z View Post

A follow-up piece for those interested:

http://www.highdefdigest.com/blog/constant-image-height-refresher-2013-part2/

Quote:
Originally Posted by John Schuermann View Post

Josh has always done an excellent job explaining the fundamentals of the CIH concept. This is a great place for anyone to start learning about this aspect of the home theater hobby (no pun intended).

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Originally Posted by coolrda View Post

Here's some good info at HD Digest via Josh Z.
http://www.highdefdigest.com/blog/constant-image-height-refresher-2013/

These two articles provided some really informative information to those who are unaware of common height vs common width. I would like to add a few more points that should be mentioned:

1. Speaker placement, the beauty of common height means that the speakers behind the screen will always stay in the same position, when looking at the screen, you will be looking at the exact same "eye-level" spot for both 1:85 or 2:40 features. For those who are building home theater with the speakers behind the screen, you should try to make sure that the L-R speakers are aligned with the edge of the 1:85 screen, not outside the 1:85 area.

2. Masking WILL improve contrast perception.

3. Original SCOPE 2:35 images are higher resolution images than 1:85, there is more light hitting the film frame and when projected the whole frame is used, when SCOPE is viewed on Blu-ray, the SCOPE or 2:40 image becomes the lower resolution image vs 16x9 which is the full resolution, it is almost like a reversal.

4. FLAT or 1:85 should NEVER be projected larger than the 2:40 image, having the 1:85 as being smaller than 2:40 was the intention.
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