Panasonic TX-P42GT20 Review
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Benchmark Test Results
Dead pixels One, top-centre: appears as black dot on red backgrounds
Screen uniformity Perfect
Overscanning on HDMI 0% with [16:9 Overscan] set to “Off“
Blacker than black Passed
Calibrated black level 0.015 cd/m2
Black level retention Largely stable, occasional very subtle “Floating Blacks”
Primary chromaticity Excellent
Scaling Excellent
Video mode deinterlacing Very effective jaggies reduction
Film mode deinterlacing Failed 3:2/ 2:2 cadences in all resolutions
Viewing angle Excellent (> 150°)
Motion resolution 1080 lines
Digital noise reduction [P-NR] is a spatial control, very little effect
Sharpness Defeatable edge enhancement
Image retention Virtually none in 2D, some in 3D
Posterization Mild, though worse with poor source
Phosphor trails Yes (reduced compared to 2D models); severity depends on individual
1080p/24 capability Accepts 1080p/24 video signal; no telecine judder
Input lag 30ms (2D), 16ms (3D) slower than a lag-free CRT
Full 4:4:4 reproduction No (2D), Yes (3D)
Power Consumption
[THX] mode (2D) 234 watts
[True Cinema] mode (3D) 208 watts
Calibrated [Professional1] mode (2D) 166 watts
Calibrated [Professional2] mode (3D) 277 watts
Standby 1 watt
Measurements taken with full 50% grey screen. The [THX] mode’s higher light output is reflected in the above power consumption figures. It is not possible to calibrate the [Professional] modes to be as bright as the [THX] mode.
