Projector Mini-Shootout Thread 2013-2014 - Page 298 - AVS Forum
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post #8911 of 8920 Old Yesterday, 09:21 AM
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Originally Posted by millerwill View Post
The calculation is simple: (1000 lumens)x(2.4 gain)/(81 sq ft) = 30 ftL.
I am not disagreeing, but just saying.

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post #8912 of 8920 Old Yesterday, 10:09 AM
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Quote:
Originally Posted by DavidHir View Post
I am not disagreeing, but just saying.
If I recall correctly both Zombie and Seegs have HP 2.8 gain screen as do I. Nothing like a projection sized plasma on low lamp! Shame they are not making the fabric anymore..All us HP fans are waiting for the fall to see if Dalite brings back the 2.4 but I am guessing they won't as it is a small market share due to is't mounting and seating requirements, not to mention the high light output of current day projectors.
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post #8913 of 8920 Old Yesterday, 01:11 PM
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Originally Posted by airscapes View Post
If I recall correctly both Zombie and Seegs have HP 2.8 gain screen as do I. Nothing like a projection sized plasma on low lamp! Shame they are not making the fabric anymore..All us HP fans are waiting for the fall to see if Dalite brings back the 2.4 but I am guessing they won't as it is a small market share due to is't mounting and seating requirements, not to mention the high light output of current day projectors.
High light output in 2D doesn't mean much for 3D! Anyone interested in 3D should have an HP screen, even if only for 3D use. Even reviewers who claim they don't like 3D change their opinion when they see it from a top end projector throwing a bright ghost-free 3D image. There is still a place for high power screens, perhaps more so than ever. All those bright projectors won't be so bright after five or six hundred hours on the lamp. Once lasers replace lamps this dimming problem may be history.
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post #8914 of 8920 Old Yesterday, 02:00 PM
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Quote:
Originally Posted by millerwill View Post
The calculation is simple: (1000 lumens)x(2.4 gain)/(81 sq ft) = 30 ftL.
The gain is only 1.8 on that material. This has been measured by several well respected publications/pro calibrators. Also, that is also only 1.8 gain when you're on axis plus or minus 30 degrees and even more restricting is that the gain is only this high if the projector is placed very close to head/eye height, then the gain tapers off pretty dramatically past that 30 degrees. Most people with a Sony aren't using a high power screen and that was why I said the Lumis is still better for 12+ foot wide screens. There are a lot of restrictions with the HP screen material. I love mine but it's not the easiest screen material to utilize fully.

So, on axis (if your projector is shelf mount ideally), you're looking at 1000 x 1.8/81= 22ftL and it will go down as the lamp ages. Whereas the Lumis can do 2200 lumens. On a material like Marks (StuidoTek 100) you get a brighter image without the drawbacks and placement/seating restrictions, so 2200 x 1.0 /81 = 27.1. Obviously with a HP screen you're looking at a lot more brightness if desired.

This has nothing to do with PQ, but only to do with how large of a screen the Lumis can do over the Sony.
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post #8915 of 8920 Old Yesterday, 02:15 PM
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Quote:
Originally Posted by Seegs108 View Post
The gain is only 1.8 on that material. This has been measured by several well respected publications/pro calibrators. Also, that is also only 1.8 gain when you're on axis plus or minus 30 degrees and even more restricting is that the gain is only this high if the projector is placed very close to head/eye height, then the gain tapers off pretty dramatically past that 30 degrees. Most people with a Sony aren't using a high power screen and that was why I said the Lumis is still better for 12+ foot wide screens. There are a lot of restrictions with the HP screen material. I love mine but it's not the easiest screen material to utilize fully.

So, on axis (if your projector is shelf mount ideally), you're looking at 1000 x 1.8/81= 22ftL and it will go down as the lamp ages. Whereas the Lumis can do 2200 lumens. On a material like Marks (StuidoTek 100) you get a brighter image without the drawbacks and placement/seating restrictions, so 2200 x 1.0 /81 = 27.1. Obviously with a HP screen you're looking at a lot more brightness if desired.

This has nothing to do with PQ, but only to do with how large of a screen the Lumis can do over the Sony.
Some good points. In my case the pj is on a stand, projecting just over my head. I had a HP2.8 for several yrs, and now the HP2.4 for a couple; I liked the 2.8, but think the 2.4 gives a slightly smoother pic.

I agree that screen gains are often exaggerated. Also, the Sony's output is ~1200-1300 calibrated lumens with a new lamp, but then falls off as usual. (I use low lamp for the first few hundred hrs.) The point is that the HP allows one to easily get >20 ftL with the Sony1100 for a screen as large as 12 ft. wide. More useable lumens are always appreciated, as will the the lack of dimming with newer light sources.
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post #8916 of 8920 Old Yesterday, 02:17 PM
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Originally Posted by Deja Vu View Post
I'm watching pretty much everything in 3D now -- either native, studio converted or 2D converted to 3D by the Teranex. I completely agree with Seeg's assessment of there not being extreme differences between projectors in a similar price range, with one caveat -- 3D! If it's not DLP then the chances of the projector being able to produce stellar 3D goes out the window. Even between the DLPs I own there are many differences; however, they are not extreme. They can all produce extremely "clean" 3D meaning clean foregrounds and backgrounds (no ghosting); however, there are subtle differences in motion handling, colour, and contrast. Brightness counts big time in 3D but again there are no extreme differences here with the DLPs I own. I use a 2.8 gain HP screen, which helps but I'd still like a brighter image. My Epsons (non-DLP) are the brightest but for most material ghosting shows its ugly head so I don't use them very often.

Sony or any other manufacturer (Epson and JVC) would have to provide DLP-like 3D for me to have any interest and I don't think that's going to be in the cards for quite some time. I've been thinking of purchasing a Sim2 but with 4K and laser hybrid projectors fast approaching I'll probably stick with what I have until the dust settles a little.

I've read the Sony 4K reviews and the Sim2 reviews and my impression is that the reviewers actually prefer the Sim2 projectors (M.150 and Super Lumis, etc.) over the Sony. Are they all wrong? Maybe. Anyway, for what I want the Sim2 is clearly the best but unless they're giving them away I'm sitting on the sidelines for a year or two as we transition to 4K laser hybrid projectors.
That is why I test, because you newer know what side a reviewer is on. The M150 was for me a big disappointment. Why, test it together side by side. The sim lumis 3DS crushed it in every way. And the image looked flat and boring. And what I look for in the perfect picture is a combination of contrast,black level, ansicontrast,clarity, debt, sharpness and dynamics. All this was to me better than the lumis 3Ds. And believe me I was shocked. Then the vw1000...
But in 3D it was fantastic no crosstalk and great punch.
If I watched much 3D I have to have the lumis 3ds PJ.
The ultimate setup in a cinema. Sony vw1100 for 2D, jvc x500/x700 for dark horror movies and the sim lumis 3ds or the super lumis for 3D.
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post #8917 of 8920 Old Today, 07:33 AM
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Originally Posted by Dj Dee View Post
That is why I test, because you newer know what side a reviewer is on. The M150 was for me a big disappointment. Why, test it together side by side. The sim lumis 3DS crushed it in every way. And the image looked flat and boring. And what I look for in the perfect picture is a combination of contrast,black level, ansicontrast,clarity, debt, sharpness and dynamics. All this was to me better than the lumis 3Ds. And believe me I was shocked. Then the vw1000...
But in 3D it was fantastic no crosstalk and great punch.
If I watched much 3D I have to have the lumis 3ds PJ.
The ultimate setup in a cinema. Sony vw1100 for 2D, jvc x500/x700 for dark horror movies and the sim lumis 3ds or the super lumis for 3D.
Probably would not be able to afford that combo, after the divorce, because buying all three would be a problem.

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post #8918 of 8920 Old Today, 09:09 AM
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Not many normal people can (I can not) , but it would be a killer combo!

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Andreas

My Homecinema

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post #8919 of 8920 Old Today, 11:22 AM
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Zombie has a similar combination. Sharp XV-Z30000 for 3D, Sony 1100ES and JVC DLA-RS55 for 2D. Killer combo.
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