Projector Reviews

Full-On/Full-Off Contrast Ratio-1423:1; ANSI Contrast Ratio-419:1

Measured Resolution with the Leader LT-446:
480: 470 (per picture height)
720p/1080i: out to the limits of the 1280 by 720 chip

DC Restoration (poor, average, good, excellent): Excellent

Color Decoder (poor, average, good, excellent): Average

Measured Color Points:
Red Color Point: x = 0.655, y = 0.328
Green Color Point: x = 0.335, y = 0.572
Blue Color Point: x = 0.149, y = 0.072

The left chart shows the 7120'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 6500 color-temperature mode, measures slightly warm across the gray-scale range. After making adjustments using the Photo Research PR-650, the gray scale measures within 99 Kelvin of D6500, the accurate color temperature, across the entire range, though the darkest images are slightly warmer.

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. Blue is accurate, red is oversaturated. Green is very under saturated and yellowish green.

Using a full-field 100-IRE white (25.62 foot-lamberts) and a full-field 0-IRE black (0.018 ft-L), the contrast ratio was 1423:1. Using a 16-box checkerboard pattern (ANSI contrast), the contrast ratio was 419:1. The best contrast ratio was achieved with the high power setting off. The brightest image was achieved with the high power setting on and produced 28.91 ft-L with a 100-IRE window (on an 87-inch-wide, 1.0-gain Da-Lite Da-Mat screen). In this mode the contrast ratio was still 1,378:1—GM