Sharp XV-Z3000 DLP Projector HT Labs Measures
Full-On/Full-Off Contrast Ratio—6095:1; ANSI Contrast Ratio—396:1
Measured Resolution with the Leader LT-446:
480: 480 (per picture height)
1080i: Out to the limits of the 1,280 by 768 chip
DC Restoration (poor, average, good, excellent): Excellent
Color Decoder (poor, average, good, excellent): Good
Measured Color Points:
Red Color Point: x=0.642, y=0.334
Green Color Point: x= 0.340, y= 0.619
Blue Color Point: x= 0.147, y= 0.068
The left chart shows the XV-Z3000's gray scale relative to its color temperature at various levels of intensity, or brightness (20 IRE is dark gray; 100 IRE is bright white). The gray scale as set by the factory, in the 6500K color-temperature mode and the Movie1 picture mode, measures pretty accurate with the darkest images, but gets cooler from there. After making adjustments using the Photo Research PR-650, the gray scale has essentially the same curve, but is closer to D6500 across the entire gray scale.
The right chart shows the gray scale (or color temperature) relative to the color points of the display's red, green, and blue color-filter-wheel segments. These are fairly close to those specified by SMPTE. Red is very slightly reddish orange, and blue is very slightly greenish blue. Green is very slightly oversaturated and very yellowish green.
After calibration, and using a full-field 100-IRE white (6.095 foot-lamberts) and a full-field 0-IRE black (0.001 ft-L), the contrast ratio was 6095:1. Using a 16-box checkerboard pattern (ANSI contrast), the contrast ratio was 396:1. The best contrast ratio was achieved in the High Contrast mode with the bulb set on Eco+Quiet and BrilliantColor set to 2. The brightest image was achieved in the High Brightness mode with the bulb set to Bright and BrilliantColor set to 2. This mode produced 0.013 ft-L on a full-field 0-IRE black which makes for a contrast ratio of 2085:1. (on an 87-inch-wide, 1.0-gain Da-Lite Da-Mat screen). —GM