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The official SeymourAV center stage screen thread! - Page 63

post #1861 of 2109
11/22/12 at 11:24am
Quote:
Originally Posted by sipester View Post

I don't see anything on the website about the masking option for the electric screens, can some one share a link?


Worth dropping Chris a line for further info.

But on the Seymour site/store/Retractable electric/Code M

masking.PNG 9k .PNG file
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post #1862 of 2109
11/23/12 at 2:11am
I am planning to use the Centerstage with 1.2 gain.

And the Sony VPL 50ES projector.

How big can I go? My room size is 19 feet wide x 20 feet length by 8 feet tall.

Also, if i went with scope 1.35:1, should i got as big as 180inch?

I guess the question is many fold:

1. Can the Sony projector project to such a large screen and still be watchable (lumens wise) with a 1.2 gain screen. (in a controlled cave)
2. Seating distance... will it be comfortable to wach on such large screen at the distance.

So, basically what is the recommended screen size for my scenario? Should I go scope or wide? If wide, I can probably go as big as 160 inch.

And if scope, do i need an anamorphic lens with the Sony? If so, how much would that set me back?
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post #1863 of 2109
11/23/12 at 1:14pm
This :

http://myhometheater.homestead.com/viewingdistancecalculator.html

To determine what seating distance is recommanded for a given screen size (or what size is recommanded for a given distance).

This :

http://www.projectorcentral.com/projection-calculator-pro.cfm

To determine if light output will be OK with your projector.

Have fun experimenting!
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post #1864 of 2109
11/23/12 at 7:56pm
Quote:
Originally Posted by deromax View Post

This :
http://myhometheater.homestead.com/viewingdistancecalculator.html
To determine what seating distance is recommanded for a given screen size (or what size is recommanded for a given distance).
This :
http://www.projectorcentral.com/projection-calculator-pro.cfm
To determine if light output will be OK with your projector.
Have fun experimenting!

Ah, that's very helpful... thanks...

Looks like the maximum size I can go is about 150 inch diagonal. I was thinking of 180 diagonal...
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post #1865 of 2109
11/24/12 at 8:58pm
Coolgeek,

I just ran my HW50 on a 150” wide (163” diagonal ) XD screen in fully light controlled room and the picture was great. Even with the light loss in 3D the picture was very good.
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post #1866 of 2109
11/24/12 at 10:09pm
Quote:
Originally Posted by TedO View Post

Coolgeek,
I just ran my HW50 on a 150” wide (163” diagonal ) XD screen in fully light controlled room and the picture was great. Even with the light loss in 3D the picture was very good.

Wonderful... now, do you think I can possibly squeeze a little bigger screen on it? Say 160 or 180? Or, do you think 150 is already at the edge of losing too much light?
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post #1867 of 2109
11/24/12 at 10:10pm
Oh, wait, you just said 163 diagonal, i thought you said 150 diagonal... well, u think it can even go to 180 diagonal? Are you running it in scope or wide?
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post #1868 of 2109
11/25/12 at 9:41am
Hi,

I was wondering what the Center Stage XD's effect on polarization is.

It is obvious that it does not maintain polarization, as it is not a silver screen. But compared to a non-woven screen, does the XD diffuse polarization more?

Any real live experience or Chris' official take on polarization on the XD are welcome!

Thanks!

Markus
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post #1869 of 2109
11/25/12 at 5:17pm
Quote:
Originally Posted by mv038856 View Post

Hi,
I was wondering what the Center Stage XD's effect on polarization is.
It is obvious that it does not maintain polarization, as it is not a silver screen. But compared to a non-woven screen, does the XD diffuse polarization more?
Any real live experience or Chris' official take on polarization on the XD are welcome!
Thanks!
Markus

Correct that it does not maintain polarization, as only silver screens do. The XD diffuses like any other Lambertian surface, or near-unity white screen. The weave doesn't affect the polarization response because once the lights hits the white pvc, it uniformly scatters back.

Cheers,
Chris
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post #1870 of 2109
11/26/12 at 7:32am
Coolgeek,

I think it would. Much will depend on the room and throw distance. Also this was a brand new bulb. We were using zoom to fill the screen so there was a loss of light due to the over scan.
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post #1871 of 2109
11/26/12 at 7:52am
Quote:
Originally Posted by TedO View Post

Coolgeek,
I think it would. Much will depend on the room and throw distance. Also this was a brand new bulb. We were using zoom to fill the screen so there was a loss of light due to the over scan.

Can you explain what you mean by using zoom. Are you saying that 1 to 1 distance is the brightest mode or placing the projector nearest to the screen possible the brightest mode? As you can see, I am a very, very new, newbie on this.

Let's say I want to project on a 180 inch diagonal screen (scope), what distance would give me the brightest? The sony indicates that it's 1/1.6 ratio.. not sure what all that means or how to calculate the distances.
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post #1872 of 2109
11/26/12 at 9:26am
Quote:
Originally Posted by DavidK442 View Post

Play around with the Projector Central Calculator and it will show you all you need to know. It gives you light output estimates for any combination of zoom and screen size your projector is capable of.
Maybe not 100% accurate, and I think they use the projector's maximum light output mode, but it is easy to compare light output from one setup relative to another.
...or if you just want the fish and not the instruction, for any given screen size a projector will be brightest at the short end of it's zoom range (closest to the screen).

I did play around with it and it was pretty informative. however, I think they have a set 'zoom' on the projector which you can't alter... If I go by them, then the max size I could get is 150.
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post #1873 of 2109
11/26/12 at 4:21pm
Wide angle zoom setting and close distance will provide the most light intensity on the screen.
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post #1874 of 2109
11/27/12 at 6:09am
Quote:
Originally Posted by deromax View Post

Wide angle zoom setting and close distance will provide the most light intensity on the screen.

Ok, got it.. thanks
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post #1875 of 2109
12/5/12 at 6:44pm
Hey Chris, how much would it be for a 150" wide, curved screen with AT material with a scope of 2.40?
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post #1876 of 2109
12/6/12 at 9:40am
Quote:
Originally Posted by Jindrak View Post

Hey Chris, how much would it be for a 150" wide, curved screen with AT material with a scope of 2.40?

The price would be the same as a C150XS on the site, as we'd not charge any extra for the 2.4 ratio (or 2.35 if that's your slice of cake).

Cheers,
Chris
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post #1877 of 2109
12/6/12 at 5:47pm
Oooh, I'm liking that price. That's so tempting....
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post #1878 of 2109
12/13/12 at 7:32pm
Just feel the need to chime in and say how happy I am with my Seymour AT electric screen and SERVICE.

I had a problem with my screen and Chris took care of it in a more than fair and professional manner!

My family and I enjoy this screen at least once a week (for years now) and I enjoy knowing it came from a great guy I can trust!

Thanks Chris!
Ken Land
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post #1879 of 2109
12/13/12 at 7:36pm
Quote:
Originally Posted by KenLand View Post

Just feel the need to chime in and say how happy I am with my Seymour AT electric screen and SERVICE.
I had a problem with my screen and Chris took care of it in a more than fair and professional manner!
My family and I enjoy this screen at least once a week (for years now) and I enjoy knowing it came from a great guy I can trust!
Thanks Chris!
Ken Land
I don't believe you, this could be rectified with pictures:)
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post #1880 of 2109
12/15/12 at 8:47am
Ok Fetch. (Hey enjoyed your build thread - would love to hear those eD12's)

UP:



Down:



Have it on a maintained wall switch and love not having to find the remote!
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post #1881 of 2109
12/15/12 at 9:51am
I thought I read this somewhere but can't find it now.....what is the minimum distance that should be kept between a center stage material and the LCR's?
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post #1882 of 2109
12/15/12 at 12:39pm
Quote:
Originally Posted by 235 View Post

I thought I read this somewhere but can't find it now.....what is the minimum distance that should be kept between a center stage material and the LCR's?

I'm using Triad Platinum LCR's and I'm only a couple of inches from the material. I think the rules applies to front ported speakers and subs which requires some distance from the screen.
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post #1883 of 2109
12/15/12 at 12:51pm
I do not think there is any problem with front ported speakers placed close to the centerstage xd screen.
It is microperf screens that have minimum distance reqs, not woven ones like CS XD.
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post #1884 of 2109
12/15/12 at 6:05pm
Quote:
Originally Posted by chriscmore View Post

The Elite A4k screen I have isn't finished testing yet. It is a woven polyester PFR like Dazian's Celtic Cloth but not as color accurate. CCC used to be popular in the DIY forums. If you were doing a DIY screen and wanted this type of material, I'd do either CCC or some of the guys are experimenting with spandex over in the DIY forum. While CCC is better than the Elite material, the historical problems with CCC and this type of weave are that CCC's gain is .79 and the cross-pixel light contamination results in a 8% loss in ASNI contrast ratio. This means that the threads light up from within since they are uncoated, and the weave it thick enough that the lit threads contaminate nearby dark areas. In simple terms, this is easiest to see as a halo effect from white on black patterns and is easy to see.
I'll put together measurements and side-by-side screen shots, but you can get a lot better performance up or down the budget.
Cheers,
Chris

Chris,

Did you have a chance to finish the A4K testing?

Could you explain how the cross-pixel light contamination is addressed in Centerstage XD? Is it a (serious) problem in spandex screens?

Thank you
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post #1885 of 2109
12/16/12 at 7:05am
Anyone has experience with their new non-AT screen material? I'm looking for a non-AT cinemascope screen, and is thinking between the new SeymourAV non-AT screen or the Carada?
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post #1886 of 2109
12/16/12 at 11:20am
Quote:
Originally Posted by zheka View Post

Chris,
Did you have a chance to finish the A4K testing?
Could you explain how the cross-pixel light contamination is addressed in Centerstage XD? Is it a (serious) problem in spandex screens?
Thank you

Obviously I'm not Chris, but I have compared my Spandex screen directly to a sample of Centerstage XD and can probably answer your question.
Other than being noticably brighter one other benefit of the XD material that quite surprised me was how much sharper image detail appeared to be.
I have tried spandex in every configuration possible (Silver over white, white over silver, white over white) and in every situation the spandex gives a slight halo effect around each pixel. Essentially when hit by a beam of light, the spandex "glows" in a larger area than that hit directly. The XD in comparison maintains greater localized contrast.
In my particular situation a little fuzziness around the edges is a good thing because I have a viewing angle greater than 50 degrees with a 720p projector. The spandex makes visible pixel structure bearable. Also I sit quite close to the screen (about 9 feet) which may allow the XD weave to be seen at times.
In my mind the Centerstage material is well worth the price difference if it works in your particular install.
Spandex is cheap and XD samples are free. I encourage you to try for yourself.
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post #1887 of 2109
12/17/12 at 7:53am
Quote:
Originally Posted by DavidK442 View Post

Obviously I'm not Chris, but I have compared my Spandex screen directly to a sample of Centerstage XD and can probably answer your question.
Other than being noticably brighter one other benefit of the XD material that quite surprised me was how much sharper image detail appeared to be.
I have tried spandex in every configuration possible (Silver over white, white over silver, white over white) and in every situation the spandex gives a slight halo effect around each pixel. Essentially when hit by a beam of light, the spandex "glows" in a larger area than that hit directly. The XD in comparison maintains greater localized contrast.
In my particular situation a little fuzziness around the edges is a good thing because I have a viewing angle greater than 50 degrees with a 720p projector. The spandex makes visible pixel structure bearable. Also I sit quite close to the screen (about 9 feet) which may allow the XD weave to be seen at times.
In my mind the Centerstage material is well worth the price difference if it works in your particular install.
Spandex is cheap and XD samples are free. I encourage you to try for yourself.

David,

Thank you for sharing your experience. I have settled with CS XD and am happy with the results. I tried spandex, though my tests were not nearly as extensive as yours. I only used a single layer of silver moleskin.

The main reason I ruled spandex out is dimness. I simply could not get the picture bright enough and still maintain decent quality. But I also noticed that the picture is a little bit washed out , not as sharp compared to what I was used to with Visual Apex white screen. At the time I tested it, the screen was still wall mounted and there was 1/2 inch gap between the spandex and the wall. Even though the wall is painted dark brown, there was some reflection light thrown back on the screen. So this is what I attributed the wash out effect to. But after reading your and Chris' posts about the cross-pixel light contamination, i think that is the real reason. And doing multiple layers would probably make the effect more pronounced.
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post #1888 of 2109
12/17/12 at 10:28am
Quote:
Originally Posted by zheka View Post

Chris,
Did you have a chance to finish the A4K testing?
Could you explain how the cross-pixel light contamination is addressed in Centerstage XD? Is it a (serious) problem in spandex screens?
Thank you

No, sorry. Been buried but should see daylight next week.
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post #1889 of 2109
12/17/12 at 5:27pm
Have my curved 120" wide 2.37:1 screen up. Looks great. I only barely notice the pattern in the material at a seating distance of 10-11'. I would say you have to be looking for it, and it is only for extended pure white scenes. Anybody on the fence because of this? Do not worry about it. It looks fine. Any guest to the theater would never notice.

Way less noticeable, than say the blue dots at the movie theater that tell the projectionist to change reels. No I have ruined it for you all haven't I?
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post #1890 of 2109
12/18/12 at 7:38am
Quote:
Originally Posted by GRBoomer View Post

Way less noticeable, than say the blue dots at the movie theater that tell the projectionist to change reels. No I have ruined it for you all haven't I?
Actually, Tyler Durden from Fight Club clued me onto those...thank goodness for digital projection because they used to drive me nuts! biggrin.gif
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