Originally Posted by falafala
Wow that is interesting! What's the diff between color lumens and the white lumens? How did you get these numbers? So looks like I need to look for hd36 for best lumens?
It is pretty crazy how far the companies are allowed and willing to exaggerate.
The difference is mostly with DLPs, though LCDs can also exaggerate white by having really strong greens with weak reds and blues. DLPs (and certain rare LCDs) can add white segments (or white pixels/panels if LCD) which lets more bright white through while leaving less room for color. Remember that light must be split and used in individual beams for each color which are then reconnected and shot out the front lens. If some of the beam is divided off to be used for a white section, that leaves less light for the colors.
Normally you just use the red/green/blue colors and combine for white..this leaves white properly bright in relation to the colors. Since boosting white brightness with an added white section takes away from color light, you not only end up with dimmer colors, but an oddly bright white and by compare.
The color-brightness is how bright a balanced white will be..that is how bright red+green+blue are altogether.
Certain 3rd-party review sites take measurements of colorbrightness or properly calibrated brightness (a proper calibration includes balanced RGBW luminance/brightness).
If you can handle the extra noise (really bright projectors need more fan-power to keep cool) the hd36 or hd151x is a small sun.
Otherwise, the hd50/hd161x or w1070/w1075 should be very close to your old Epson and a bit quieter than the hd36/151x.
The Optoma's have a longer throw and can use some fancier 3D options (purchased separately), but are higher priced and have been showing video-noise and crashing problems on the current firmware (should be fixed with updates or later purchase dates).
The w1070/1075 is lower-priced, but it only uses the DLPlink 3D (which is still a very good 3D) and has a shorter throw which means you'll likely have to mount it closer to your screen..it also isn't as bright as the hd36/151x, obviously.