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It would be interesting to take this same evaluation and conduct it a year later or with say a 1000 hours on the projectors. Change the lamp and run the same tests again.

I'm guessing you would not get the same results on the LCD projector due to color decay from the organic compound in the LCD panels (chips). You could have a severely yellowish image from color decay and still meet the CLO ANSI lumen specifications.

This is the big advantage in my opinion for DLP projectors over LCD projectors. Same color from one year to the next regardless of how many times the lamp is changed.