Panasonic 65VT50 Calibration Overview
The Panasonic VT50 is a 2012 HD (1920x1080) high-end plasma TV from Panasonic, known for its excellent picture quality and deep black levels. Widely praised for its reference-level image quality, it was a popular choice for home theater and was also often used in color/edit suites as a client review display in SDR workflows.
Below is an overview of the performance of the 65" model before and
after professional Panasonic VT50 calibration.
A 3D LUT calibration was done to achieve the best possible results. The resulting cLUT was loaded into the eeColor LUT box.
At time of calibration, the unit was 11 years old with 18,562 hours of usage.
Equipment, software and target used in the calibration:
- Calibration software: DCM
- Colorimeter: K-10-A
- Spectro: CR-300
- Patch generator: DVDO AVLab-TPG
- Calibration target: Rec 709 D65 G2.4 110 nits (SDR)
- LUT holder: eeColor 65^3
Native Gamut
This is the native gamut (before calibration) of the Panasonic VT50 compared to the Rec 709 color space calibration target. The display's native gamut fully covers the target color space, making it ideal for accurate display calibration.
White Point
This is a close-up of the native white point (before calibration) compared to the calibration target of D65. It shows significant deviation from target and a strong yellow tint. The display has bias/gain CMS controls to manually adjust lower/upper Greyscale, if desired.
RGB Balance
This is the Greyscale RGB balance before LUT calibration, is has a strong yellow tint.
EOTF: Gamma
This is the native gamma and luminance response of the Panasonic VT50. The reference line is configured for the calibration target of G2.4. In its default native state, the display's brightness is significantly higher than the calibration target.
Spectrum Analysis
This is the spectrum of the Panasonic VT50 65 inch in native gamut for full white, with the red, green and blue primaries spectral output overlaid to identify color channel issues. The R, G, B color channels match the white response closely, this is ideal. Notice the spiky spectral response and narrow peaks, a high-end spectrometer is needed to measure this panel accurately.
Calibration
After display preparation and configuration, a large display profile is run to create a detailed characterization of the display. From that profile data, a 3D LUT is then generated by DCT and loaded into the eeColor LUT box.
Gamut & White Point (post)
Gamut (post calibration) compared to the Rec 709 D65 target - both color space and white point are on target.
RGB Balance (post)
This is the Greyscale RGB balance post-calibration, a significant improvement.
EOTF: Gamma (post)
This is the gamma and luminance response of the Panasonic VT50 after calibration compared to the reference calibration target G2.4. The display now tracks the reference very closely.
Color Error: delta E 2000 (post)
These are the dE 2000 stats post calibration for a 1,100 point stress test validation profile. With an average dE 2000 color error of only 0.56, the Panasonic VT50 now performs exceptionally well given that the JND (just noticeable difference) for human vision is set at a dE 2000 value of 2.3.
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