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White, Grey, or Silver - A Review! - Page 5

post #121 of 1037
Quote:


Originally posted by Gordon Groff
It appears to me (newbie guessing here) that the HCMW exacerbates screendoor/lines due to 0 diffusion and the sharp-edged, rectangluar, straight rows of the dimples used to texture it. Any comments Tryg??

This kind of sounds like a similar problem that occurs in perforated screens where the grid lines and the holes kind of coordinate and add to one another in certain circumstances.
post #122 of 1037
Thread Starter 
I didn't mean to imply you need some lighting. Obviously the lower the lighting with any screen the better the results.

Now at 3 gain some people might find sitting in the dark with this kind of foot lamberts coming back at your eyes too much. In this case, some mild bias lighting would be great. Since the screen is solid, just a small light behind the screen is all you need. This will shut down your irises a bit, add a little indirect ambient light to the room and allow for a very enjoyable image and viewing. Check what bias lighting does for percieved blacks.

You get all the detail and image from higher gain, excellent percieved blacks from the bias lighting, accurate colors and whites and all the viewing angle you need. hmmmm

Gordon, I wouldn't say it exacerbates it. This would imply it makes it worse than normal. What is normal? If a white screen is normal then yes I think you can see the screendoor more on grey screens as shown in the illustration in the initial post. I use a D-ila so there is virtually no screen door anyway. I don't even think about these things like screendoor. Had I taken this picture with a DLP things would look much worse. LCD, you guys would run and hide

Also, what you see at the screen is not what you see at your seating positions.
post #123 of 1037
I think these pix and comparisons would be much more useful if the projector was recalibrated to match each screen. Many projectors have their brightness turned below max on high gain screens. I realize it's not reasonable to do this in a comparison of this sort, however.

I'd also like to see similar pix with a higher power, LCD projector. I agree with the findings herein for D-ILA and perhaps even DLP, but are they correct for high-lumen LCDs like the PLV-70 and the HS-10?
post #124 of 1037
Digital projectors generally don't need any calibration adjustments to be used on different screens. The reason is that they all need all the contrast ratio they can get, and any adjustment you would do for a particular screen will lower the contrast ratio. Once the black and white level have been set at the one and only value that gives the best contrast ratio, you would be silly to change that.

If there is too much brightness, you might consider using a neutral density (grey) filter because that would preserver contrast ratio. But you wouldn't adjust the projector brightness because that would lower the contrast ratio.

Your point is well taken however that high lumen projectors might be too much for high gain screens. I have seen a 20HD be way too bright on my Draper M2500 screen which works great with my JVC G1000. Personally I would try increasing the image size or using neutral density filters if that were an issue.

-Tom
post #125 of 1037
Tom,

But Vutec seems to be violating that rule of physics with it's high gain "screens somehow."

They've managed the same thing with their Prismatec rear screen material. The sample I have is way brighter at all viewing angles than any of the various types of other samples I have.

David,

"My only problem there is that I can't imagine where I'd store the screen"

How about swinging it up 90 deg and sticking it to the ceiling with magnets or cabinet latches? You could put some artsy fabric on the backside.
post #126 of 1037
It does seem like they're violating the laws of physics, doesn't it? The light has to come from somewhere, so if the viewing cone is large in the horizontal direction, it must be small in the vertical direction. One way to test this: turn the screen 90 degrees on its side
post #127 of 1037
Thread Starter 
No, this material doesn't violate the laws of physics it just takes it to a new level that we are not familiar with. Yes the viewing cone is twice what the other high gain screens are and it is a very smooth transition. All the other screens seem to go to about 20 degrees max then drop off very noticably and rapidly.

I really got my curiosity up tonight when I was pondering why this screen really only measured about 3 gain. Had they sent me the 4.5 gain material? Well I busted out my samples of 6 gain and 9.5 gain and put them up to the screen. Lo and behold...It's definately the 6 gain material.

The 6 gain material seems to be the sweetspot for this material as the dropoff rate is so slow and smooth it's almost not noticable even when projecting white only. If you notice the 9.5 gain material actually drops off fairly rapidly(yet smooth) and it's about the same as the 6 gain material at 25 degrees. As we get out to 50 degrees the 6 gain stuff still looks great and the 9.5 gain stuff is no longer reflecting much light.

This is probably why they have decided to just manufacture the 6 gain stuff. Definately a winner for home theater.




Michael, I thought for sure it must be the same viewing angle in both directions but just to make sure I tipped the 6 gain sample on its side. Yes the viewing cone is slightly smaller in the vertical direction. How? I have no clue. Just looking at the surface material it looks identical from all directions. However after testing the sample on its sideit's not quite as wide (a little smaller). This definatley makes sense to have the wider cone on the horizontal plane. No worries though, when you get your screen if you have your 16:9 screen installed vertically you should recognize something is wrong right off the bat

This stuff is amazing

OK no more pictures of white screens...It's making my D-ila look bad. I need the Shading Wizard! Mark?
post #128 of 1037
Great stuff Tryg. As usual.

That 9.5 gain stuff looks like it would be awesome for rejecting ambient light. Does it sparkle? Or have a bright sheen?

Maybe you can get them to send you a full size version of the 9.5 material after all the screens they're going to sell from your review.

--Darin
post #129 of 1037
Tryg, you stated
"Had I taken this picture with a DLP things would look much worse."
What things? Are you saying that the SilverStar would look much worse with a DLP? I just ordered the Virtuoso HD2 and thought you had implied that the SilverStar would look great with that pj.
Dan(I guess I am the village idiot)
Tryg check out my post at the end of this thread. Thanks as always
http://www.avsforum.com/avs-vb/showt...hreadid=263731
post #130 of 1037
He is saying that screen door would be worse on a DLP and even more of a problem on an LCD.
post #131 of 1037
Quote:


Originally posted by Michael Grant
It does seem like they're violating the laws of physics, doesn't it? The light has to come from somewhere, so if the viewing cone is large in the horizontal direction, it must be small in the vertical direction. One way to test this: turn the screen 90 degrees on its side

There's no violation. The screens plug into the wall like a light brite kit. ...and the sample, hmmm....the samples glow for up to two hours after you turn off the lights, so you are set unless you are demo'ing movies back to back.


(just kidding of course)
post #132 of 1037
I think the next move will be biogenic screens. If they sense blacks they go darker and if they sense whites they go whiter.

The Chameleon (TM) Screen!

True contrast enhancement for the next generation of organic projectors.
post #133 of 1037
Thread Starter 
Quote:


Originally posted by darinp

Or have a bright sheen?

Maybe you can get them to send you a full size version of the 9.5 material after all the screens they're going to sell from your review.

--Darin

Yes, the 9.5 material probably isn't for home theater. It's too extreme and th 6.0 stuff seems to be a great fit. Might be good for some commercial applications though like in a walkway at an airport. Bright, probably rejects ambient light good and if your walking straight on at it, it would be a great advertizing board for a projector. Just speculation.

D_B_0673, I hope you have viewed a single chip DLP projector before you purchased. You may be in for a big surprise! Dan, don't let me rain on your parade as I'm sure the Virtuoso is a worthy projector. I just don't tolerate one chip projectors. I will say when darinp brought over his calibrated HT1000 he put it in eco mode. The projector went silent. The image got a little dimmer but still very satisfying as the screen is ~3 gain. I must say, a nice little combo...and probably for any higher end DLP. I did however see rainbows all over the place.

Actually, I was thinking if Sony was smart they would send me one of their new SXRD projectors. I'd be happy to review it

For those that are interested in this screen maybe Alan could set up a powerbuy and make owning one a little easier.
post #134 of 1037
What a review.

This definitely deserves a place in one of the magazines but we are privileged to have it here first.

Its amazing the difference between the screen material when placed side by side.
What helps is you have real user size comparison screens from each manufacture. Its impossible to get a good idea how each screen looks with a 1 foot square sample.

I think for Dila and CRT the SilverStar looks like a big hit. I wonder how it does with DLP.
I am also surprised how well the White material looks also.

Well you've out done yourself Tryg. Now what are you going to do. Its all downhill from here
post #135 of 1037
Did anyone confirm the price per square foot of the material?
post #136 of 1037
Thread Starter 
I think the obvious answer to this is call AVS. My curiosity just got the best of me so I did. I highly doubt anyone else could beat their deal. It was way below what I expected. Nice work AVS!

If you are interested in this screen I suggest you call em.
post #137 of 1037
Tryg,
Bias Lighting "behind" the screen??? My screen will be on the back wall. Not sure what type of setup you refer to.
Thanks
Dan
post #138 of 1037
Excellent! your time and effort in this research is much appreciated by me and everyone else I,m sure! Thanks a lot! I use the hi-power and love it but not the off axis performance, so this material looks like the best compromise of both. Concerning the surface itself the hipower is cleanable, how about the silverstar? And why can,t this material be made in a roll down? A fixed screen is out of the question for me. Are the beads larger than the hi-power material ? pardon me if I missed a post on this question
post #139 of 1037
I believe that it is the lack of Flexibility in the surface material that makes it difficult to come out with a roll up version.
post #140 of 1037
You could make awood L-section frame, say3" x 3", around the screen with rope light behind it. The frame will keep the light from hitting the screen and from viewers seeing it directly; it makes a nice halo/corona effect on the wall.
post #141 of 1037
Hey Tryg (or anyone else who knows)

I'm fascinated by the "scattering" and "diffusion" effect you described earlier and it's benefit for a digital image. Is there any "rating" system or way of determining the "amount" of this effect for a given screen material?

I'm speculating that it may have a major impact on the appearance of pixelation/screendoor/other digital FPN. Do you think this is true?

How would one "rank" the following screens in terms of this effect (from least to most diffusive):

DaLite HCMW (Probably least)
DaLite HiPower
Stewart Firehawk
Parkland Plastic
Stewart Grayhawk
Silver Star

Thanks!

Gordon
post #142 of 1037
Thread Starter 
Quote:


Originally posted by D_B_0673
Tryg,
Bias Lighting "behind" the screen??? My screen will be on the back wall.

Dan, won't this hurt you neck always looking behind you to watch your movies? I recommend putting this screen on your front wall. Search for "bias" lighting.

Gordon, I really wouldn't worry too much about about this "scattering" effect. Very very very low on the picture inprovement priorities list. You would have to have an extremely well tuned system to even notice it.

ALAN,

Hey you really threw me with your post so I forgot to thank you for the compliment.

I was thinking... What the hell is he thinking saying this should be in a magazine? Alan, don't you know by now that AVS crushes any magazine? The fact that you got exclusive rights to my work is a testiment to how worthy I think this communication medium is. Sorry to those who haven't found AVS yet. They'll have to just rely on the opinions of marketers.

Alan, maybe you should raise the AVS bar one notch higher by offering a yearly award to the most informative post. This would reduce the nonsense chatter, save on server bandwidth and probably pull in some of that Grey Matter we have lost over the years. I'd love to see some of the old brainpower return to AVS. BTW, $1000 award would definately raise my level of blather.

Yes, even DLP looks good on the SilverStar.

Thanks again for the compliments and you should definately pick one of these things up for the showroom. I continue to enjoy it's benefits. There is probably a stigma to the SilverStar that it's just too expensive. All I can say is I've seen a lot of products bought over the years that are much more expensive, and purchased on hype alone. What I can say about this product is it will likely be the best upgrade to the final image you'll make. Here's to delivering the image that you never knew was there!
post #143 of 1037
Lotta hype but when enough people really see it full size their going to be amazed. Tis a winning product and a half.
post #144 of 1037
Hi Tryg,

Very nice showdown indeedy.

I realize that the Silver Star is recommended here for digital projectors - but just wondered off chance what you would think if its use in a curved Torus CRT screen?

TIA.


EDIT: Oooops - just read that it is on a rigid foam backing.
post #145 of 1037
I watch movies on a Draper 2.5 gain 120" diagonal screen with NEC XG 1352LC CRT Projector, please some one advise me if Silver star will look even better? I will appreciate your advise.
Thank!
post #146 of 1037
Tryg wrote:
> These shots were high-resolution shots taken from the Kodak high resolution digital website. <<br />
Do you have a URL for that site? I'd like to see what the original sources looked like.

- Tim
post #147 of 1037
How durable is the silverstar? I have two dogs and I am wondering if noses etc... and children will cause irrepairable damage to it. I want the silverstar but I am considering using goo until the dogs become room temperature and my friends kids grow up and then buying a screen like the silverstar.
post #148 of 1037
Tryg,

From your ealier DIY review, you thought that Rustoleum Aluminum created an excellent surface that had similar gain and performance to the SilverStar.

The issue with others that have experimented with this paint was the difficulty in getting a uniform coating.

Has anyone come up with a workable solution to using this aluminum paint?

I was thinking that if you can paint a car silver, there must be a way to spray a screen. Continuing with the car theme, match the Rustoleum color with an automotive finish and have a professional have a go at it. Couldn't cost that much. Of course, I would have the surface primed and sanded so the painter would just have to put on the final surface.
post #149 of 1037
Thread Starter 
VideoGrabber

here is the Kodak Website or you can do a google for kodak pictures, should be first at top

Randy Mathis,

I would not recommend this screen for dogs , noses, children etc. Generally dont touch this surface. I don't know if it would be vary receptive to cleaning as I don't want to do it and find out... unless I have too.
Get something the dogs can total and you'll laugh about it, not cry.

Christer, why would you hire a painter when you can do all that? If you have an air compressor use an HPLV gun and have fun. $50 at Harbor Freight tools

raoofsyed, I don't know about CRTs. I suspect it would be fine but you never know. Last night I watch Vanilla Sky and was just giddy about the performance. After the movie I was tired and wanting to go to bed, flipped off the DVD and Joy Ride was on HBO in HD. The picture was so stunning I stayed up another 2 hours watching in awe. This thing is fun

This thing actually makes my projector look like a super bright CRT. More depth, contrast, and has that slight softness that CRTs exibit. Very immersive! I wish there were some more veterans to come check this out as I think they would be impressed.
post #150 of 1037
I ordered one from AVS. Tryg, how long did it take for you to get yours? I am hoping I will have it in about 2 weeks and then I will give you my impression with my SX21.
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