LG 32EP950 SDR Calibration Overview
The 32EP950 is a 31.5-inch 4K UHD (3840x2160) RGB OLED professional monitor from LG, designed for color-critical work. It features true 10-bit color, a 1,000,000:1 contrast ratio, and its OLED technology delivers deep blacks, precise colors, and wide viewing angles, making it ideal for professional video editing, post-production, and content creation.
The LG 32EP950 is a popular choice in the professional display market, ideal for color suites that require a Grade A display for SDR content.
Below is an overview of the display's performance before and after professional LG 32EP950 calibration.
A 3D LUT calibration was done targeting a Judd alternative white point (AWP), as these JOLED panels trigger metamerism in observers. The resulting cLUT was then loaded into the BMD Micro Converter LUT box.
Equipment, software and target used in the calibration:
- Calibration software: DCM
- Colorimeter: CR-100
- Spectro: CR-300
- Patch generator: DaVinci Resolve, SDI out
- Calibration target: Rec 709 AWP G2.4 100 nits (SDR)
- LUT holder: BMD Micro Converter 33^3
Native Gamut
This is the native gamut (before calibration) of the LG 32EP950 compared to the Rec 709 color space calibration target. The display's native gamut fully covers the target color space, making it ideal for precise display calibration.
White Point
This is a close-up of the native white point (before calibration) compared to the AWP calibration target. 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 calibration, it has a strong yellow tint.
EOTF: Gamma
This is the native gamma and luminance response of the LG 32EP950. The reference line is configured for the calibration target of G2.4. In its default native state, the display's brightness is higher than the calibration target.
Spectrum Analysis
This is the spectrum of the LG 32EP950 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.
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 BMD Micro Converter 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, excellent result.
EOTF: Gamma (post)
This is the gamma and luminance response of the LG 32EP950 after calibration compared to the reference calibration target G2.4. A significant improvement, the display now tracks the reference much more closely than before.
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 0.38, the LG 32EP950 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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