Note: For the measured lumens values the projector's contrast control was adjusted to produce the correct reference white level when playing a 100% white test pattern on the connected Blu-ray Disc player. The listed lumen values were with the zoom set to its mid-throw position. At max. zoom I measured about an 8% increase in brightness and at the minimum zoom position I measured a 24% decrease in brightness. When set for maximum zoom my measured brightness (i.e., approx. 9250 lumens) was a little below Epson's rated 10,000 lumens. However, the Z10005UNL reviewed had approx. 200 hours of use on its dual lamps, which could account for some loss of brightness. Also Epson offers several different lenses for use with this projector and certain of the other available lenses may produce a brighter image than what was provided with the 'standard' zoom lens provided with the reviewed unit. The bottom line is Epson's specified 10,000 lumen value appears realistic for the brightest mode, with new lamps and with certain of the available lenses.
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