[Electron Mover]

Need screen advice for HS51. Screen will be 14' from viewers in totally light controlled, basement room with white ceiling and carpet. I am looking at DaLite manual screens because of room constraints and don't know which material to go with (matte white or high contrast matte white or ----)? I plan on 110" or 120" diagonal 16:9 screen. Current set up is Sharp XVH37 U pj and matte white 100" diagonal 4:3 screen. Thanks for your help.

 

[PCARACER]

Since you are going with a manuel screen, are getting a projector with all that contrast and think you only need a unity gain screen then consider the High power. It will be closer to unity gain when ceiling mounted, resist wrinkles and waves and the viewing cone will prevent more light from bouncing off your ceiling and washing out the picture. If your pj is mounted low, or you have low ceilings then the extra brightness will be fine with the amount of contrast and black levels you will have.


Good luck.

 

[Electron Mover]

Jeff,

Thanks for replying. You said "If your pj is mounted low, or you have low ceilings then the extra brightness will be fine with the amount of contrast and black levels you will have."

The projector will be on a shelf such that the lens will be just a little below the top of the screen. Will the High Power still be your choice?

Thanks,

Bill

 

[PCARACER]

It will just mean that your picture will be brighter. The less of an angle from your viewing position to the projector lense the brighter your picture will be up to the max gain of the screen. The screen will seem brightest near the projector and get dimmer the farther you get away from it. So if the projector lense is lower and thus closer to your head the image will appear much brighter.


I have not seen this projector yet but from what I am reading, the blacks are excellent so the high power should give you a very bright and punchy picture with excellent blacks. If you like the plasma look then this will work very well for you. If you like a dimmer picture with more film like brightness or plan on sitting much off axis to the side then the high power may not work well in that situation.


Get a few samples and see for your self. there are always trade offs. The high power is an interesting material. Most really like it. If blacks are good it is good. Now for my projector, I thought the High power was too much but I only have 700:1 contrast not 6000:1 like you will have.


Good luck

 

[ay221]

I too am thinking of getting an hs51. Would a Dalite HCCV 92" be bad for it? my ceiling is 7'6" and will be ceiling mounted. and the screen top will be set a foot down from the ceiling 6'6". Projector will be mounted on a beam that is 13'4" away and I plan to sit around 12' away from the screen.

 

[darinp2]

Quote:

Originally posted by PCARACER If you like a dimmer picture with more film like brightness or plan on sitting much off axis to the side then the high power may not work well in that situation.

For the dimmer picture desired case a neutral density filter might work well though. With the projector close the directionality will help kill reflections off the side walls and the uniformity from the screen should be very good. It is the screen I would recommend in a situation like this. Keep in mind that people sitting off to the sides will get dimmer images, but this might work out well if some people want bright and some want dimmer.


--Darin

 

[WMCLAREN]

Any thoughts on the Stewart Greyhawk or Firehawk. I've called Stewart and provided them the new Sony specs...but have gotten conflicting opinions. Thanks...

 

[Souki]

Quick question/opinions about screen material from DaLite for this projector. Both products use dark grey material. Which is better, negative gain or positive gain? The HCCV has received positive reviews. I'm leaning towards the HCCV.


High Contrast Da-Mat

View angle : 40 degrees

Gain : 0.8


or


High Contrast Cinema Vision

View angle : 45 degrees

Gain : 1.1


Plus, is the additional cost of the Da-Snap frame that much better than the Perm Wall frame? Is it really worth the extra cash?

 

[TheFerret]

Quote:

Originally posted by Electron Mover Need screen advice for HS51. Screen will be 14' from viewers in totally light controlled, basement room with white ceiling and carpet. I am looking at DaLite manual screens because of room constraints and don't know which material to go with (matte white or high contrast matte white or ----)? I plan on 110" or 120" diagonal 16:9 screen. Current set up is Sharp XVH37 U pj and matte white 100" diagonal 4:3 screen. Thanks for your help.

When the light from the projector strikes the screen, reflects off of the screen and onto the white ceiling and floor, what do you think will happen in your light controlled room? I can tell you the white ceiling floor isn't going to absorbe the light hitting it and your eyes will see this and will cause problems comparitively.


Now, what I mean by comparitively is you will notice a difference if the white ceiling/carpet were equally as dark as the walls--then again maybe they are bright, too. In any event, you may have light control from outside the room, but what about light bouncing off the room's surfaces?

 

[Electron Mover]

Ferret,

That's exactly my point and why I posted my?

I think I'm going to go with the Da-Lite Hi Power 119" diagonal screen to try and minimize the reflected ambient light. Right now with the 100" MW screen, when there's a bright scene, the light reflected off of the ceiling and carpet lights up the whole room and is very distracting.


What screen size and material are you going with? How much control of light do you have?

 

[TheFerret]

I guess I didn't see the point of a light controlled room with white surfaces. I have what I would hope to be a 99% light controlled room, but I know in reality its probably like 95% control. Even with the darkest coloration (without being 100% black) there are things that participate in reflection.


To expect that a screen is going to remove all light from the projector after having reflected off the screen surface is not reasonable enough. Maybe the new Sony Blackscreen would be appropriate, but any higher-gain screen is also going to better gain unwanted light, too, no?


I should ask is there a reason why white is a must in the room?

 

[darinp2]

Quote:

Originally posted by TheFerret To expect that a screen is going to remove all light from the projector after having reflected off the screen surface is not reasonable enough. Maybe the new Sony Blackscreen would be appropriate, but any higher-gain screen is also going to better gain unwanted light, too, no?

I don't think anybody said they expect to "remove all light". The High Power isn't any higher average gain than a 1.0 screen. However, if you put the projector a little overhead then there will be less light going to the ceiling and floor than with a Matte White 1.0. And reflections from those things back to the screen will get less gain to a viewer close to the projector. If the back wall is dark and there is no external ambient light, then the instantaneous CRs should be better with this in that kind of room to somebody near the projector. Moving outside the viewing cone would cause the opposite effect, as it would with just about any directional screen, though. That is, if reflected light is getting higher gain than the projected light to you then you've hurt your CR in mixed scenes, but helped it if you have the opposite situation.


Even with a High Power making those things darker helps quite a bit though. I put a dark red area carpet over my white carpet in my living room just in front of my screen and this helped keep reflections off there from being distracting. In my theater room I have black velvet on the floor as the "black" carpet I bought wasn't dark enough.


--Darin

 

[TheFerret]

Postulating. I really do not know what EM is expecting in terms of end results, which got me probing his end results for the room environment descriptor.


I know an appropriate screen can make this better, but I find this part of the equation.

 

[Electron Mover]

Quote:

Originally posted by TheFerret I should ask is there a reason why white is a must in the room?

Although it's not polite to answer a ? with a ?, Ferret are you married?

 

[Electron Mover]

All I'm trying to do is stay married to my current wife and cut down reflections off the screen to the ceiling and floor. In terms of what I meant by totally light controlled room, I should have said "when door closed and pj off, with your eyes open you would think you were in the inside of a cat"!

 

[PAP]

That's part of the equation, but with white walls, you're destroying a large part of the picture quality, just no way around it.

 

[Electron Mover]

Quote:

Originally posted by PAP That's part of the equation, but with white walls, you're destroying a large part of the picture quality, just no way around it.

The walls are dark blue-green (black).

 

[TheFerret]

Quote:

Originally posted by Electron Mover Although it's not polite to answer a ? with a ?, Ferret are you married?

Yes, and have been for several years. My wife loves the 'bat cave' where the current projector is in. Should I describe the room?

 

[Electron Mover]

Quote:

Originally posted by TheFerret Yes, and have been for several years. My wife loves the 'bat cave' where the current projector is in. Should I describe the room?

Pretty please! Seriously, please do-including screen size, material and viewing distance.

Thanks

 

[TheFerret]

No problem. Here is an early pre-finished bedroom conversion I did as a temporary solution until my basement project is finished.


The room is about 14'L x 12'W. Part of the room's length has a tapered ceiling. The paint was a Sherwin-Williams. I found an acceptable color (blue-purple) and bought the darkest shade they could make. I then rented a spray-painter from Home Depot and sprayed the ceiling, walls, doors, window, and all trim.


The actual screen wall has flat-black paint and I can use it as a reference point (of sorts) for 'blacks' in movies. The screen itself is a Draper M1300 100" NTSC (meaning its 4:3, 80"W x 60"H) with about 1.3 gain. The screen is mounted onto a Draper Cineperm tube-frame. The carpet is jet-black, which replaced the stock contractor off-white carpet.


Because of the proximity of the adjacent walls/ceiling to the screen wall in some moderately-bright or brighter scenes the paint's sheen, which is flat, still offers up reflection of light coming off the screen. This illuminates all other room surfaces and, as you can imagine, get reflected back onto the screen as well as directly into my eyes.


I believe that the professional that calibrated my CRT projector measured about 14 foot-Lamberts maximum (100-IRE full-field test pattern). I have wondered if going 'all black' would help, but I think that at this stage of brightness from the projector its the surface reliefs that are doing the majority of the reflection of light. Maybe black velvet all over the walls/ceiling ... as I wouldn't be the first to do that.