Test Bench: Olevia 747i 47-inch LCD HDTV
Color temperature (6500 K Color Temperature, Dark Room lighting modes before/User 6500 K, Dark Room lighting modes after calibration): 20 IRE: 6,753/6,503 K 30 IRE: 6,529/6,471 K 40 IRE: 6,483/6,550 K 50 IRE: 6,590/6,519 K 60 IRE: 6,611/6,452 K 70 IRE: 6,856/6,549 K 80 IRE: 6,821/6,621 K 90 IRE: 7,090/6,730 K 100 IRE: 7,004/6,752 K Brightness (100-IRE window before/after calibration): 36/37.8 ftL
With the Olevia's Dark Room lighting and 6,500 K color temperature presets selected, its grayscale tracked within ±590 degrees kelvin of the 6,500 K standard from 30 to 100 IRE - a below-average level of performance. Adjustments to the red, green, and blue settings in the 6,500 K User color temperature menu helped improve performance considerably, resulting in ±230 K grayscale tracking from 20 to 100 IRE. Color decoder tests showed +5% red error on HDMI and -5% green error on component-video inputs. The set's measured color points, meanwhile, were very close to the SMPTE HD spec.
Overscan - the amount of picture area cut off at the edges of the TV's screen - measured 0% for 1080i/p signals with the 1:1 Aspect mode selected and Cropping switched to Off. Turning Cropping back on increased overscan to 3%. The set displayed 1080i/p and 720p test patterns with full resolution via the HDMI and component-video connections, with no visible edge enhancement.
Screen uniformity was average, with a slight darkening visible on full-field gray test patterns (but not on regular programs) and a noticeable drop-off in contrast when watching from off-center seats. As expected, given that Silicon Optix designed the set's Realta HQV video processing chip, the Olevia breezed through the deinterlacing, film mode, and noise-reduction tests on both the standard- and high-def Silicon Optix HQV test discs.