Anyone try the new Da Lite HC screen yet? - AVS Forum
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post #1 of 12 Old 11-16-2000, 08:32 PM - Thread Starter
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It looked like from what I read here a few weeks ago, this new fabric seemed like it was going to be a hit.

I'd like to get a piece and see how it compares to my DIY grey screen. Anyone know where to get it?

Chris

My Home Theater is a work in progress.
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post #2 of 12 Old 11-17-2000, 04:48 AM
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Hi,

just order a sample from Da-Lite. It came within a week to me in germany. I already have done some test but I didn't find time to post the results yet, especially I have problems now with glue of scotch tape at my normal screen. See my posting here regarding cleaning a Da-Lite screen. http://www.avsforum.com/ubb/frown.gif

A preliminary result is that the fabric cuts light output nearly 2 f-stops.

Emil
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post #3 of 12 Old 11-17-2000, 04:42 PM
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I got a sample.

There is no way in the world that this is a .8 screen fabric. This sucker is dark! Sure it makes the black darker but it kills the whites of coarse too.

My advice if you want to make a grey screen make it yourself if possible. I still not a fan of grey screens, but at least you can do some color correcting while you darken your image (i.e. add a took of magenta if your image is green etc...)

-Mr. Wigggles

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post #4 of 12 Old 11-17-2000, 07:45 PM - Thread Starter
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Sorry to hear this product is less than what was expected.

I made my own "grey" screen, learning in the process that you can easily go too dark! I had to "whiten" up my mix quite a bit before I got the tint that helped blacks but didn't affect whites too much. There was a trade off in the whites, but my G11 from 9 ft. away is too bright anyway, so it worked out good. Maybe when I have the G11 calibrated, it'll change things, but I doubt it. I think it'll just make me appreciate the grey even more.

Chris

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post #5 of 12 Old 11-17-2000, 08:52 PM
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Agreed. This is NOT .8 as it is way too dark.

Can't wait to see what Don has some up with at Stewart!

Tom
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post #6 of 12 Old 11-18-2000, 08:21 AM
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I hope that DaLite is reading. There are a number of things that I like about the DaLiteHC. The uniform texture is great and it stretches nicely. If they could just lighten/silver it up a little, I think it would be pretty good for most people with projectors in the 1200+ lumen category.

I don't expect to see Greyhawk soon or cheap. Don Stewart could get much feedback better, faster and cheaper if he just sent out some samples like DaLite has.

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post #7 of 12 Old 12-07-2000, 09:48 PM
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I think this stuff is not a high tech product fabricated for projector screens, but rather it's grey tent material from Taiwan, or something. I was hugely disappointed with the sample that was sent to me. It was insano-dark. Even with a 2000 lumens projector, I cannot imagine how color would not be thrown off by the grey.
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post #8 of 12 Old 12-08-2000, 05:30 AM
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O.K. guys here is the scoop right from the Horses' mouth (I think I just called myself a horse, oh well).

After some extensive research and running more test (some even by me) this is what I have concluded about this fabric. First of all the samples you all have received are indeed lower than .8 in gain. I found out that our Tech Center made a test batch at a gain of .6 and that was inadvertently cut for samples. Therefore, nearly all of the samples out there are in fact this .6 gain. That is why some of you have made comments about it being so dark. The latest batch of this material made is in fact a .8 gain and correct samples will be available next week. (the roll is coming today) O.K. so that answers that question.

Now on to the contrast issue that we talked about when I was a guest on the forum.... After some extensive testing, we have found that the measurable contrast you get from this screen is better but only by a small margin. However, after talking with several industry pros (ie. ISF etc.) we have come to the conclusion that the perceived contrast level is indeed enhanced by this screen. The reason that this is so is because of the degree to which the black level is reduced. Think of it this way, we add black borders to all sides of our video screens in order to help the perceived contrast of the screen. If you take the screen and make the borders white, the image has not gotten any more dim nor does it have less contrast. However, when you add the black borders you give your eye a point at which to measure things by and hence you have a better perceived contrast. The HC Da-Mat works in the same way by reducing the black levels from a projector that indeed cannot project black (the absence of light).

I hope this helps to clarify some of your questions. Ken, does that help answer the e-mail you sent me?

Thanks,

Blake


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post #9 of 12 Old 12-08-2000, 07:34 AM
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Blake,
Some, but not all. It would be nice to see the gain vs. angle curves.
Hopefully I'll see another sample soon.

Ken

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post #10 of 12 Old 12-11-2000, 10:14 PM
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Blake,

Thanks for the info.

By the way I still have my question in the Da lite 2.5 thread still up. If you don't mindcould you answer that one as well.

-Mr. Wigggles

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post #11 of 12 Old 12-14-2000, 07:44 AM
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I still haven't seen a new sample.

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post #12 of 12 Old 12-14-2000, 10:02 AM
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Quote:
Originally posted by kelliot:
I still haven't seen a new sample.

Ken,

Can you tell me when and who you requested the new sample with so that I can track it down to see where it is?

Thanks,



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