Black Diamond from Screen Innovations? - Page 86

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Here is how I class the BD Gain's
.8 Best Blacks , minor sparkle Viewing Angle 44%
1.4 Very Good Blacks and More Contrast, Minor sparkle but little more vs .8...Viewing Angle 55%
2.7 Okay Blacks and Alot of contrast, little more sparkle vs the 1.4..best 3d..Viewing Angle 60-65%

Hope this helps

Could you do the same with the viewing angle. I know the 2.7 will have the narrowest bc of the gain, but ive read where its still good.

Are all of these retroreflective?

Hi guys,

I live in Brazil, and this reduce a lot my screen options. We have here a very good 0.9 gain HC gray option, and some matte white 1.0 gain options. We have a reseller here for the Black Diamond, and even if the price is a liver blow (you cant imagine how much it will cost me!!!), I'm willing to get it if it works in my environment. To make things worse, we dont have here a place to demo the screen.

1) My new hometheater room is 9.5 ft wide, 15.5 ft deep and 8.2 ft height. Eyes will be at 10.5 feet from the screen and 3.2 feet from the floor. Projector will be at the end of the room (probably lens at 12 feet).
2) I really want a 2.4 screen with 8.5 feet wide. Fixed frame.
3) I want to do CIH zoom, and probably will be taking one of the new projectors with lens memory (fingers crossed to see a good LCOS projector with this feature).
4) It will be a semi dedicated room with no light from outside. It will be most used to movies and series (80%), but some sports with a little ambiente light (20%). No worried, at this point, with 3D.
5) I really like Rich's room and I´m willing to paint walls and ceilling in a similar way http://www.avsforum.com/avs-vb/showthread.php?t=1259917. Black and gray with low reflective properties. But I think, even with this treatment, my narrow room will have lots of side reflections.
6) I like black levels, but I love nice colours. I enjoy a bright image.

I have these doubts:

1 - With the points above, how would a 1.4 BD III perform? And how it woud compare with a good 0.9 gain HC gray screen?
2 - What is the best placement of screen/projector/eyes to optimize gain?
3 - Is there another screen that would perform better and could be shipped to Brazil?

Thx

Research DNP Supernova based on same tech....... http://www.avforums.com/forums/proje...amond-etc.html

Will Edit In..
Now Done...

Repeat...

Here is how I class the BD Gain's
.8 Best Blacks , minor sparkle Viewing Angle 44%
1.4 Very Good Blacks and More Contrast, Minor sparkle but little more vs .8...Viewing Angle 55%
2.7 Okay Blacks and Alot of contrast, little more sparkle vs the 1.4..best 3d..Viewing Angle 60-65%

Again when it comes to my screens of Choice,
My First Choice is always an SI Screen
Love there company and there staff including there RnD DEpt is amazing..
FYI,
They Do have other screens in the Line up
List of there Reference Screens including BD...
http://www.screeninnovations.com/pro...xed/reference/

Hey Brother,
Good to see you back on the forum...
have you seen the new 2.7 yet..?

wow, so the 2.7 has the best viewing angle?

I'm curious if any of you have compared the BD's to the new Dalite HiPower 2.4 gain screen. I imagine the BD's have better light rejection, but that the HP's are free of any artifacts, i.e., sparkles, etc. Would be interesting to hear about any direct comparisons.

Yes the 2.7 has the best viewing angle,
Better viewing angle comes in handy with 3d.

Thats why you really need to look at the 3 gains and pick whats the deciding factor in choosing the right gain for your needs...

I am in no way a dalite fan ,,, At All.
Dont like there product,.
Staff very hard to get ahold of to get support and answers......
They talk the big talk but fail to show up to the gun fight .. (ie the Stewart vs dalite shoot out.... Dalite was a no show..)

HP vs BD are two different animals. The HP is retroreflective which reflects light back towards the projector, a good choice if your head is near the projector like mounted just above head height. The BD is angular reflective which reflects light at the same angle away from the light source, similar to a laser pointer hitting a mirror. Tends to work best for ceiling mounted projectors.

Unfortunately, I cant. My local dealer only has a gen2 0.8 gain. Hes way overpriced, livesvin an expensive neighborhood and can charge that. He knows I basically was using him to look at a sample. Im in Birmingham, AL so we dont have much. Id be willing to drive to Atlanta, or Nashville, if I knew of one there.

What i meant by look was consider not actually view in person...
You need to compare the 3 gains with regards to spec knowledge..

Tends to work best for ceiling mounted or is recommended? What would be the optimal projector placement on an angular reflective screen like BD 1.4?

http://www.screeninnovations.com/too...jector-wizard/

Thanks for the link fraisa, but this calculator is about distance of the projector from screen, not height. I want to know what is the recomended placement of projector/screen/eyes on vertical axis (probably is influenced by horizontal distantce, and that's why I post my data on the post above)

[]s Humberto

I have only done ceiling mounts with any bd screen no issues...

You have to figure the angles for the projector. You could probably use a mirror and see if you can see the projector from your seating position. Place the mirror in the center of the screen. Also, the further back the projector is the less noticeable the hot spotting and better screen uniformity.

Quick question....

Was thinking about doing a 113" 16x9 Black Diamond in the 1.4 gain. Now with the new Panasonic AE7000 announced with MEMORY ZOOM i'm thinking about using a 2.40 aspect screen in a 130"ish screen. My concern is the viewing angle... with a wide screen like this and with the black diamond, will colors/brightness fall off noticeably at the sides of the screen? should i stick with a 16x9 screen for uniformity?

This is a very good question. Though not with a BD, I was considering the new Dalite HP (2.4 gain) in either its White or its Gray (HC) version, the latter having only about half the viewing angle of the former. Using samples obtained from Dalite, for the very large screen I wanted (and got), 144"W (for 2.35), I found that there was noticeable drop off in brightness at the sides of the Gray samples, but not so with the White ones.

So it certainly does bear checking out whether or not the viewing angle of any screen of interest is wide enough to prevent this kind of non-uniform brightness.

The Viewing angle of the 1.4 is the same for both 16x9 and 2:35.
I have posted that value on the previous page..

Any screen with a gain coating will have uniformity problems. You can't change physics. Remember even a negative gain screen like a .8 screen could be .6 screen with a 1.3 coating.

With an angular reflective screen the light that is reflected in the center of the screen is reflected back towards someone sitting centered on the screen. The light hitting the sides of the screen is hitting the screen from a different angle and not as much is reflected back toward the viewer causing these difference in screen uniformity. There is a fix though that helps improve screen uniformity, it is called a curved screen

Wtih a retoreflective screen the situation is improved as the light is reflected back towards the projector. If your head could be exactly where the projector is placed you should have fantastic uniformity but unfortunately that isn't possible.

However, we often do not notice the difference in brightness on different parts of the screen. It is easier to notice if we project a solid color on the whole screen but not as easy with viewing material.

i know the viewing angle is the same, but i'm concerned about having such a wide screen, and if the brightness shift would be visible during a 2.40 movie. How much would the sides be dimmer?

Just viewed, what I was told, was a G3 1.4 screen. I recall seeing one several months ago and it looked close to black with no image projected on it. I was struck by how grey this screen, I saw today, looked. Do these screens look more grey or black? It didn't look much darker than a Stewart Grey Hawk which was also in the room. Any thoughts would be appreciated.
John

Definitely darker than a Greyhawk. The 1.4 could be compared to the Firehawk. The .8 gain is definitely close to black. The 2.7 is a lighter grey that could be close to a Greyhawk but still a bit darker.

Benito

I was very surprised at how grey it looked. I'm not sure if the sale guy didn't know which one he was showing me but even the grey bars looked lighter than I recalled. Will have to talk to the manager on Monday. Thanks,
John

One last question. I have a BenQ W5000 and a Carada Brilliant White 1.3 gain screen. Which of the Black Diamond screens would still give me similar light output? The 1.4 or .80?
thanks,
John

Whitetrash66,

I doubt most would notice the difference because the shift happens gradually from the center to the sides. Some people might notice in bright scenes like shots of a blue sky or ice and even then unless the know the material they might just think its part of the film.

Hey Bob,
What Type of BD and size do you have?