Sony 32EX400 Calibration Overview

The 32EX400 is a 32-inch LCD TV from Sony. It features a 1080p Full HD resolution and BRAVIA Engine 3 for image enhancement. Released in 2010, the display was a low budget choice for home theater.

Below is an overview of the performance of the display before and after professional Sony 32EX400 calibration.
A 3D LUT calibration was done and the resulting cLUT was then loaded into the eeColor LUT box.
At the time of calibration the display was 10 years old with ca. 20,000 hours of usage.

This calibration demonstrates how professional 3D LUT calibration can greatly enhance the color performance of old, low-spec displays.

Equipment, software and target used in the calibration:

  • Calibration software: DCM
  • Colorimeter: K-10-A
  • Spectro: CR-300
  • Patch generator: DaVinci Resolve, SDI out
  • Calibration target: Rec 709 D65 G2.4 130 nits (SDR)
  • LUT holder: eeColor 65^3

Native Gamut

This is the native gamut (before calibration) of the Sony 32EX400 compared to the Rec 709 color space calibration target. The display's native gamut does not cover the target color space, full green and red cannot be re-produced by the display.

Sony 32EX400 native gamut pre calibration

White Point

This is a close-up of the native white point (before calibration) compared to the calibration target of D65. It shows deviation from target and a red tint. The display has bias/gain CMS controls to manually adjust lower/upper Greyscale, if desired.

Sony 32EX400 white point pre calibration

RGB Balance

This is the Greyscale RGB balance before 3D LUT calibration, it has a red tint.

Sony 32EX400 RGB balance pre calibration

EOTF: Gamma

This is the native gamma and luminance response of the Sony 32EX400. 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.

Sony 32EX400 EOTF gamma tracking pre calibration

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 - red and green have been corrected as good as possible by the cLUT, the white point is on target.

Sony 32EX400 gamut & white point post calibration

RGB Balance (post)

This is the Greyscale RGB balance post-calibration, a significant improvement.

Sony 32EX400 RGB balance post calibration

EOTF: Gamma (post)

This is the gamma and luminance response of the Sony 32EX400 after calibration compared to the reference calibration target G2.4. The display now tracks the reference very closely. Performance in the shadows will always be compromised on LCD TVs, due to the backlight

Sony 32EX400 EOTF gamma tracking post calibration

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 0.88, the Sony 32EX400 now performs very well given that the JND (just noticeable difference) for human vision is set at a dE 2000 value of 2.3. Prior to calibration, the display had an avg delta E 2000 color error of 6.4315

Sony 32EX400 delta E stats post calibration for stress test validation profile


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