Unless indicated otherwise, all tests were performed via the HDMI input from an HD-DVD player set to 1080i output.
Color temperature (Low color temperature, TheaterPro mode before/after calibration):
20 IRE: 6,268 / 6,459 K
30 IRE: 6,229 / 6,321 K
40 IRE: 6,445 / 6,528 K
50 IRE: 6,618/ 6,700 K
60 IRE: 6,503 / 6,594 K
70 IRE: 6,372 / 6,484 K
80 IRE: 6,443 / 6,555 K
90 IRE: 6,541 / 6,645 K
100 IRE: 6,527 / 6,647 K
Brightness (100-IRE window before/after calibration): 35.5/36.6 ftL
The JVC LT-46FN97 has a TheaterPro mode that adjusts its picture settings very close to the ideal image for home theater viewing in a dark room. Before calibration, this mode came very close to delivering the 6,500-degree kelvin neutral gray standard across its range of brightness levels, varying by an average of only 119 K from the low end (20 IRE) to the high end (80 IRE) of the grayscale. The only issue I could detect is that it became somewhat blue in deep black and very dark areas. Pre-calibration light output was also excellent, measuring 35.5 foot-lamberts, which is perfect for a completely dark room. After calibration I was able to improve the grayscale slightly, but overall it didn't require much tweaking at all.
Using a checkerboard pattern, I measured a contrast ratio of 461 and an average black level of 0.06 ftL after calibration, which is very good, although not quite as good as with some LCDs I've seen. Black and near-black levels varied a bit depending on the brightness level in the rest of the screen; dark areas brightened slightly as other areas of the screen brightened, obscuring some details near black.
When set to its Full Native aspect ratio, the JVC LT-46FN97 clearly resolved every line of a 1080i test pattern. Edge enhancement was nonexistent with Sharpness reduced to zero. There were very few signs of false contouring or banding on any test patterns. White-field uniformity was good, although I've seen better on high-end LCDs; with gray fields at 50 IRE and darker, I could discern that the edges of the image were brighter than the middle, and at 10 IRE (very dark indeed) and below, the upper corners of the field were visibly brighter than the rest.
Off-angle viewing was about average for an LCD: At about 5 feet to either side of the sweet spot from a 7.5-foot seating distance, dark parts of the image became visibly brighter and more washed out, although discoloration was minimal. Geometry was perfect, as it should be with any LCD. Overscan was a perfect 0% in Full Native mode. Primary color accuracy for red, green, and blue was very good, and color decoding was excellent.
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