Originally Posted by Yzfbossman
Hi Chris, I would enjoy hearing about your testing if you were able to get it done.
Sorry for the long delay. My meters and I were overdue for some quality intimate time together.
Here is a general top-down view of the A4K top left, Dazian's Celtic Cloth on the lower left, and Dazian's Coated Celtic Cloth on the right. There were several posts in the DIY forum up until around 2008 as it was a fairly popular DIY AT material. Simply search "CCC" when you have some PTO time to burn off. It was a pretty mediocre material that had low gain and wasn't very A.T. (-3dB started at 8kHz). Still, like the spandex screens they're currently playing with, for small screens where you're sitting up close, it can do the job. Be careful with interpixel light bleed through these types of materials, which can be seen as a haloing effect around something white on a black background. They also must have black backgrounds behind them or else additional light contamination from the back will further reduce the contrast ratio. Typical cost for CCC or spandex screens are about $60 of bulk material, so if you have expectations around the value point of painted screens, they can meet those expectations.
A little bit of the reference target is peeking out at the bottom so I could do a white balance correction. It's perhaps a tad overexposed but the balance is basically there.
Regarding gain, without any scaling or benchmarking to other materials (an unfortunate reality of practice these days - I may start rating things both ways), here are the test results:
Elite A4K: 0.69
Dazian Celtic Cloth: 0.72
Dazian Coated Celtic Cloth: 0.74
A valid question would be what the heck Dazian is coating it with, as nothing was visible to me. No additional sheen or anything, but the meter was picking up a tiny increase in brightness and a more accurate color. The color temperatures of the three materials are hard to see but here's the measurements:
Elite A4K: 6954 degrees, R: 96.5%, G: 97.3%, B: 106.2%. Essentially, too cool a white but I suppose if you're going to market a dim screen material having a slightly cool temperature can make it appear brighter since the eye is more sensitive to blue.
Dazian Celtic Cloth: 6765 degrees, R: 97.2%, G: 99.5%, B: 103.3%. Closer... This shows that while the weave, density and thread size appear identical, the thread itself is better.
Dazian Coated Celtic Cloth: 6593 degrees, R: 99.6%, G: 98.8%, B: 101.6%. Nailed it. This is essentially a pure white screen, which is likely why (along with its cost) it was quite popular in the DIY forums like the Wilsonart laminate.
A little closer shot:
Even closer ...
And a very close one at some angle so you can see how the weave pattern is the same, 100% polyester PFR.
I didn't measure the acoustical transparency of the Elite, as I assume it's similar to the CCC. These kinds of thicker weaves need to be stretched tight so they can open up and the transparency improves. Perhaps for proper sonic transparency Elite intends for their customers to have to stretch the material like this customer's third A4K screen from them:
Long story short, you can have a brighter, more color accurate 4K screen by making a Dazian CCC screen for much less money. I'm also guessing that you could put together a better fitting result.