Results of testing various Da-Lite screen materials
| Projector: | NEC Multisync LT150 |
| Projector Mount: | Sitting on a 16" high coffee table |
| Throw Distance: | 129" |
| Driven By: | HTPC |
| Software DVD Player: | WinDVD 2.6.4 |
| Room Dimensions: | 15'2" wide, 18'2" deep, 7'7" ceiling height |
| "Screen" Size: | 4:3 - 80" x 60" |
| Camera Used: | Canon PowerShot S100 |
| "Screen" to Camera Distance: | 165" |
| Camera Height: | 39" |
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| 2001-07-10 |
Having just received my NEC LT150 projector, and reading about good results
with Da-Lite High Power screens with this projector, I set out to judge for myself.
I wanted to try and duplicate the excellent screen material test done by Christopher Crim
with his Sony VPL-VW10HT.
The first section of this test was done on July 10, 2001 between 6:00pm and 8:00pm.
There was some ambient light in the room. Note that the dead pixels you see in
the photos must come from the camera since the projector doesn't have any. I've had this camera
for over a year and have never noticed them until now. Bummer.
The setup. For more pictures of the room go here.
The first picture is zoomed out from the viewing position. The masking tape
on the wall (just inside the speakers) shows the 80" width boundry. The second photo
shows each screen sample with its product name below. The number in parentheses is
the gain as stated by Da-Lite. The remainder of the "screen" is a white textured wall.
The windows desktop picture shows the shadow being
cast by my center channel speaker. You will notice this same shadow in the
other pictures and you can use it to compare the projector black bars vs. "absence of
light" black.
In general, I think the pictures are pretty close to what I observed. This was my first
attempt at this and will post more in the future including different viewing angles and
in total darkness.
A few shots from Gladiator (oops, should have moved the pointer).
Toy Story 2
Vertical Limit
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| 2001-07-12 |
These first two pictures show a simulated ceiling mount with the different
screen materials. Due to my low ceiling, the projector was only about 7'
off the ground. The first picture was taken while standing (probably 5'9" off the ground). The
second picture was taken while seated. Even while seated, the high power
showed more brightness. I did have other pictures but they were too blurred since
I wasn't using a tripod.
The projector has been moved back to the coffee table for these
next shots that test the viewing angle. I started directly lined up behind the
projector and each subsequent shot, moved one foot to the left. In the last couple, my left speaker
starts getting in the way since it sits three and a half feet out from the wall.
Screen door. Taken about 2ft from the wall.
Probably more of a projector test than a screen test. The following pairs of pictures
show the different Gamma Correction settings. I have shots from both WinDVD 2.6.4 and the ATI 4.1 players.
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| 2001-07-13 |
Over in this thread, Yahoo
mentions that turning off the white segment setting lowered the brightness of the projector.
Here are photos with and without "White Segment" checked. I didn't see any visual difference
when I switched and I don't think the pictures show any difference either. Could I have
done something wrong?
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| 2001-07-25 |
Second set of tests after receiving my Da-Lite High Power.
I basically pulled
the screen down half way and put the other image samples underneath. The samples
are not laid out exactly the same as the original tests so take another look at
the setup photo.
Once again, the stuck pixels you see in the photos are from my camera, not
the projector (thank goodness!).
The Setup
Toy Story 2
Tarzan
Cast Away
Gladiator
What Dreams May Come
Vertical Limit
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