Screen Gain vs. Picture Quality - AVS Forum
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post #1 of 7 Old 12-10-2001, 04:34 PM - Thread Starter
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I'm about to purchase a CRT projector and I would like to inquire about the best screen gain. I understand that the different gains will reflect different amounts of light and may also affect the viewing angle. My question is: Are there any differences other than this? Does the amount of screen gain affect the accuracy of the color data or black levels? What would be the best screen gain to get. My room will be completely light controlled with a Barco 1208 on a 52" x 92" screen.
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post #2 of 7 Old 12-10-2001, 04:57 PM
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A low gain screen is best for crt's. a 1.0 or 1.3 is great.
I use a 1.3 Draper Cineperm screen with a 1272 Sony. Fantastic picture. Puts any LCD,DLP projector to shame.

True bravery is arriving home late after a boy's night out, being assaulted by your wife with a broom, and still having the guts to ask: Are you still cleaning, or are you flying somewhere?
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post #3 of 7 Old 12-10-2001, 06:24 PM
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Aaron,
Besides those mentioned ,higher gain screens will hot spot and have more color shift that is apparent. Additionally the texture of the screen material becomes an issue at about one screen width on my Stewart videomatte which has a 1.8 gain. These things may or may not be a big deal for you. For me the additional light far outweighs these things but that is me.
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post #4 of 7 Old 01-31-2002, 12:01 PM
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Art wrote:
> For me the additional light far outweighs these things... <

Is this because you have a large screen, and it would be too dim otherwise? Or that you like to be able to watch in less than a totally light-controlled situation? (Just curious. :) Most people seem to be completely satisfied with a gain ~1.3, from what I've read.)

- Tim

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post #5 of 7 Old 02-01-2002, 05:01 PM
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Tim,
I'm using a 16x9 ,107" wide screen. I use a completely darkened room with dark colored walls and ceiling all painted with flat paint. The seating is black! I think you get the idea. The added light adds a great deal of punch and depth. I'm using a stacked pair of Runco 980 ultras. Each wouldn't light up that screen therefore the stack. I've had this system for almost five years and love it but that's me. I personally don't notice color shifting except on black and white material and even then it doesn't distract me. I'm not distracted by hot spotting either but I can see it. I have ,however, seen CRTs with screens that are too large or are too low in gain . The result, in my opinion, is an image that looks flat. This is a trade I don't want to make.
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post #6 of 7 Old 02-02-2002, 01:52 AM
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Thanks for all the details, Art. Sounds very impressive!

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post #7 of 7 Old 02-02-2002, 08:43 AM
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VideoGrabber,
I just noticed you are in Kalamazoo! If you would like to see what a 1.8 looks like in action drop me a PM since I'll bet you are only about 20 minutes from my house. We could arrange something. Really weekends are best since I work in Jackson most of the week so the evenings are very very short!
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