Spyder3TV, DisplayMate & HQV
Calibration - Spyder3TV Report
We calibrated the VT30S with Datacolor's Spyder3TV Home Theater Color Calibration kit prior to our visual tests. This is to ensure we assess the HDTV based on optimal display settings and not on visual estimation alone. Using the TV's Standard preset, we've also disabled all picture enhancement features to avoid any discrepancies. Our calibrated results are indicated in the diagram below. The VT30S also allows for advanced calibration such as white balance and color management adjustments when either of the Professional1 or Professional2 presets is selected. For white balance tuning, the Viera's RGB IRE option caters for individual red, green and blue gain management as well.
DisplayMate is an application which generates a sequence of test patterns to determine the capabilities of imaging devices, like color, uniformity, and gray-scale accuracies for example. For our tests, we've hooked up the VT30S to our display test-bed PC via a HDMI connection. Similar to our calibration setup, we have also disabled all visual enhancements on the TV to reduce the variables involved. Here are some of our findings.
|Screen Uniformity||Excellent screen uniformity. There were no signs of blotchiness or irregularities on the brightest and darkest test screens.|
|Dark Gray Scale||Apart from minor noise grains, the VT30s delivered consistent grey tones and crisp black depths. No contrast or color shifts were spotted with extreme viewing angles.|
|Color Scales||The color scales faded to black too quickly on the last three steps. Other than that, the VT30s exhibited rich and accurate colors.|
|256-Intensity Level Color Ramp||Smooth gradients with little traces of compression artifacts. As with the previous test, the only caveat with the NeoPlasma is its average handling of darker tones.|
IDT HQV Tests
IDT's HQV Tests are designed to assess image quality and handling of digital displays through a variety of video signal processing tasks which includes decoding, de-interlacing, motion correction, noise reduction, and film cadence detection. We've programmed the Blu-ray player to playback in 1080i to test the TV's de-interlacing capabilities. Here are the results we noted on a few of the most crucial tests:-
|Digital Noise Filtering||Panasonic’s P-NR noise reduction algorithms were less than ideal. Noise grains persisted even with the filters running in top gear.|
|Diagonal Filter Test||Nonexistent jaggies on the rotating bar. Result suggests a stable de-interlacer, capable of effective diagonal interpolation devoid of field misalignments.|
|Film Resolution Loss Test||Confident native inverse telecine on the SMPTE pattern (1080i60 sourced from 1080p24). Ironically, results deteriorated after enabling the set's Film Cadence Detection feature.|