Originally Posted by uzun
I replaced my RS15 with an RS40 a couple of weeks ago, overall the 2D picture on the RS40 is superior to that of the RS15. It has much more natural colors, and the picture seems sharper as well with less artifacting in panning scenes etc.
But the loss of lumens is very noticeable. In normal lamp mode, on a 110" stewart Studiotek screen, it has way less lumens vs the old RS15, and the RS15 had 800 hours on its lamp!
In High mode it also has less lumens, but the difference is not so great. with the RS15 in high lamp mode, and the RS40 in high lamp mode, they seem closer in lumen output than when both are set to Normal.
Has anyone else noticed a loss in lumens when going from last years to this years? It's so great I really want to stick with high lamp mode even with a new bulb, but the fan noise gets bad in high mode.
The room is completely light controlled, and I have the projector ceiling mounted about 12' from a 110" diagonal stewartfilm Studiotek 1.3 gain screen. It's the same exact position and placement as the RS15 was.
I also have moved from an RS15 to the RS40 and have noticed improved sharpness, better convergence, and probably better ansi CR (less "glowing" around bright objects against an all-black background). Black level seems about the same or maybe a tad worse with the iris fully closed, but the highlights are way brighter. I still have the RS15 so i might do a side by side to see which black can go blacker.
One improvement that I can easily spot without any measuring or simultaneous comparison is that that the RS40 has way less lens light spill outside of the 16:9 rectangle. Projecting black on a white wall, I pretty much see just the rectangle, whereas on the RS15 i see a big oval with no rectangle. I suspect this difference already existed between the RS25/20 and RS15/10 models, too.
I took my RS15 to my brother's house with a 14' 2.35:1 matte white screen a year ago and he and his roommates were amazed by the brightness. This time I did the same thing once i got the RS40 and nobody was really amazed, and people were straining to see the details. Gamma A seemed to help, but nobody was particularly thrilled and blown away like last year. Subjectively I think this is in line with everyone else's experiences regarding the brightness. To be fair though, I have not touched the "Wide1" or "Wide2" color modes. Maybe the RS15 gets much of its subjective brightness advantage from its oversaturated colors?