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BenQ PE8700+ DLP video projector:
Calibration
The BenQ PE8700+ was essentially identical to the PE8700 in most of its responses to conventional test patterns and scaling tests. This is as it should be; apart from the change of DMD, it is, in most respects, the same projector. But I did measure an improved peak contrast (peak full-field white vs. an open input) of 2343 for the PE8700+ on my 80-inch-wide FireHawk screen (16.4 footlamberts peak, 0.007fL minimum with 50 hours on the bulb). The ANSI contrast (16-square checkerboard pattern) measured 140. (The PE8700 logged contrast readings of 1712 peak and 136 ANSI.) The Before/After color-temperature results are shown in the accompanying figure. The Before readings were taken with the color-temperature control set to "+2," which was the preset closest to 6500K. They appear very close, but the After results were nearer to the optimum D65 point.—TJN
Article Continues: Reflections On a Dim Bulb »
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