Elite Screens VMAX200XWV PLUS3, Руководство по эксплуатации продукта

Страница: 104 / 134

001 www.elitescreens.com
Elite CineTension Projector Screen: Gain
Elite rates this screen as having a gain of 1.1, fairly typical of matte white surfaces. While I don't have a really excellent
scientific method of determining it, my basic measurements indicate that it is close to claim. I previously measured
Carada's Brilliant White projector screen surface as being approximately 1.3 (they claim 1.4). I have the Carada mounted
directly behind the Elite CineTension, and after adjusting for the slightly different distances (the Elite is 5 inches closer to
the projector), I found the Elite to produce roughly 84% of the Carada. Multiply that by 1.3 and I get an approximate gain of
about 1.09. Close enough!
In the image immediately below, the Elite surface is on the top, the Carada on the bottom, with a good monitor you can
just barely detect a difference in brightness - although the difference is definitely slightly greater if you were standing in the
room with me looking as I took this picture. Live you can not only pick up a slight difference in brightness, but also color.
Elite CineTension Projector Screen: Color Accuracy
This would be the Elite projector screen's weakness. For
measurement purposes, I used the projector closest at hand.
In my measurements with my Optic One pointing at the
projector, the way it was set up, I measured white to have a
color temperature of 7069K.
I then measured light reflected off the screen surface, and
measured a color temperature of 7404K, slightly cooler
(more bluish).
By comparison, I then measured the Carada, which came
back with 6979K, definitely closer to the original direct from projector measurement. The Carada shifted warmer by a very
insignificant 80K, while the Elite went the other way (cooler) by 345K. The other notworthy difference was measured green
output. The Carada was just a tiny bit heavy on the green (less than 0.5%, while the Elite was 0.8%. In both cases those
should be considered very good. Immediately below, both the Elite and Carada, with the Elite on the top. Very, very close.
My camera does a less than perfect job here, but the point is, the color balance is still very close, (just not this close.)
BTW, the yellows looked a lot better on the screens than in this photo! Also, live, in looking at a white image, as well as
the color bars, you can see the slight difference in the color of these two screens, with the Elite being slightly bluer...
The important point to consider, is that if you are
calibrating (even a basic calibration using a
typical $40 - $50 disk like AVIA, or Video Essen-
tials), you will be adjusting color based on the
light reflected off of the projector screen surface.
In other words, your adjustments will take into
consideration any shift in color balance caused
by the screen.
101
www.elitescreens.com
Product Reviews
News Release
Marketing
Contact
001
www.elitescreens.com
Product Reviews
News Release
Marketing
Contact
Product Review
CineTension Matte White Motorized Projection Screen
with Remote Controls