2000 already? I'm not even at 400 yet in 4 months. No noticable change so far.
I don't think the different display modes have any effect on the life of the lamp. The only thing I've heard a about it is that film and video modes turn the white segment of the color wheel off, nothing about the lamp.
percentages? math? No clue, but my brightness level has gone from 50 (factory) to 71 to get approximately the same picture.
As for the other issue, I have never taken it off film mode except briefly, so I can't compare. Roto is right, the lamp puts out the same juice no matter what mode so I can't see any mode affecting bulb life or brightness.
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