Originally Posted by fpoujol
The discussion is going out of the original question. We can do many things to improve the image moving the projector closer or away, painting the walls, open and close the zoom etc. But the question is not solved: can we recommend a projector that can hit the 16 FL having a 150+ screen, say gain 1 screen material, under a normal Home Theater enviroment with out needing to be a magician to get a little more here and there to compensate the real technical capacity needed to get the right image at this size?
Well I wouldn't toss out zoom, it has an important effect, but let me get to that later....
150", if we're talking diagonal, 16:9, that's 75 square feet. With a unity gain screen, that means you need 75*16 = 1200 Lumens. Now that's a "real world" number, lets call it calibrated. Off the top of my head, if you want a high quality image (ie calibrated), that puts you into Sony VW1100, possibly VW600, or something like a Sim2 Lumis or maybe a DPI machine. If you want it "solved", that's it, get out the checkbook and write a big check, that's really the only option.
Now I did mention zoom being important, just as an example, say you were willing to accept 12ftL, being that that's "only" 900 Lumens, a JVC X500/X700 could do that, but only if you're able to place it for optimum brightness, ie at min throw. If you needed a longer throw, the JVC wouldn't work as it would be too dim at long throw. So these things, specifically throw can be important to answering the question.
By other side, 600, 1,000 or 3,000 lumens are tricky figures many times manipulated by the factories, making difficult to get solid comparisons!
That's why you have to look at reputable reviews, and accounts from folks here on the forum who do independent measurements.
I have not seen this projector under 3K. The market is flooded with good to excellent projectors reaching the sub 120" ...but falls short on the calculator when the requirement goes over that 120 inches screens
Brightness, Contrast, Cost, pick any two. Home Theater projectors value contrast almost above all else, probably because it is just about the most obvious factor in perceived picture quality. So HT projector designers basically end up balancing cost vs brightness. High contrast requires an "inefficient" light path because you have to block a lot of the light you want to reduce the light you don't. So in an HT, high contrast projector, the only way to get more light out, is to put more light in, which means bigger, more expensive lamps, power supplies and cooling systems, and all of that needs to be kept quiet which adds further expense. By the time you do all that, you've already pushed yourself out of the "mass market", so the cost per unit goes up even more because less units are sold to divide the R&D costs over. Plus you generally need uncommonly large rooms for screens that big, further reducing your market, reducing potential units sold, driving per unit R&D costs even higher.
If you want a sub-$3k machine that can light a 150" unity gain screen, you need to look at business projectors, but those have low contrast and aren't "Home Theater" quiet either.