Please comment on my proposed RS45 setup. - AVS Forum
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post #1 of 4 Old 07-08-2012, 09:22 AM - Thread Starter
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I am in the building process so trying to solidify my projector choice.

I have been thinking about the JVC RS45 would be perfect to hold me over until 4K becomes mainstreem.

Here is my purposed setup.

115" wide Screen Excellence 4K screen (4K ready)
JVC RS45 about 14.5 feet away from the screen. This should keep me at the magical 2.0 figure for a external lens, correct?

I want an external lens but I was shocked by the costs.
Are there any refurbished or used models and sources of lens people are using that are plug and play?
Maybe use the zoom function and deal with the lost of resolution.

Thanks for the help.

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post #2 of 4 Old 07-08-2012, 06:03 PM
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Quote:
Originally Posted by colleycol View Post

I am in the building process so trying to solidify my projector choice.
I have been thinking about the JVC RS45 would be perfect to hold me over until 4K becomes mainstreem.
Here is my purposed setup.
115" wide Screen Excellence 4K screen (4K ready)
JVC RS45 about 14.5 feet away from the screen. This should keep me at the magical 2.0 figure for a external lens, correct?
I want an external lens but I was shocked by the costs.
Are there any refurbished or used models and sources of lens people are using that are plug and play?
Maybe use the zoom function and deal with the lost of resolution.
Thanks for the help.

Correct, 14.5' throw with a 2.37 115" wide screen gives you 2.02. Are you looking to go with a fixed lens or use a slide?

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post #3 of 4 Old 07-09-2012, 11:36 AM - Thread Starter
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Originally Posted by AV Science Sales 5 View Post

Correct, 14.5' throw with a 2.37 115" wide screen gives you 2.02. Are you looking to go with a fixed lens or use a slide?


From my research, a fixed may be cheaper and better.

Any thoughts? What does the used market look like for lenses if I decided to get one? I heard some models don't work with JVC.

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post #4 of 4 Old 07-09-2012, 12:13 PM
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Quote:
Originally Posted by colleycol View Post

From my research, a fixed may be cheaper and better.
Any thoughts? What does the used market look like for lenses if I decided to get one? I heard some models don't work with JVC.

Depends on who you ask. Here is an abbreviated summary of the various options:

1. Zoom Method: Many projectors can do this, more and more they have memories to simplify.
PROS: No additional cost to do. Easier installation and setup. No image manipulation (Bluray scope is NOT 1080p in reality).
CONS: You lose light...2 reasons, 1 you only use part of the panel and 2 you zoom that part larger. Pixels get larger (again, you zoom), so for really large screens that may become apparent.

2. Fixed Anamorphic Lens Method:
PROS: You utilize full resolution of the panel, and full light output of the panel, for scope movies.
CONS: For 16:9, you do NOT use all resolution. Depending on lens, either can be expensive or the cheaper ones may actually hurt things more than help. Additional cost.

3. Movable Anamorphic Lens Method:
PROS: You take advantage of the projectors full panel for both 16:9 and 2.35:1.
CONS: Cost gets up there, and installation can be challenging.

Also both 2/3 may require a VP, depending on the projector (not in the case of the RS45). Also understand for Bluray scope, as mentioned, it is not natively 1080p. Which means the projector/VP has to introduce "fake" information in order to stretch it to fill the 1080p panel. Depending on how well this is done can affect the image. Definitely trade offs.

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