FSI LM-2140W Calibration Overview
The FSI LM-2140W is a 21.5-inch professional broadcast monitor from Flanders Scientific designed for accurate color representation and versatile connectivity in various production environments. It features a native Full HD (1920x1080) resolution on an 8-bit IPS LCD panel, capable of displaying over 16.7 million colors. The monitor utilizes full 12-bit video processing, ensuring precise color accuracy and smooth gradients, essential for critical viewing applications.
The FSI LM-2140W display was a popular mid level choice in the professional display market, used by colorists working with SDR content.
Below is an overview of the display's performance before and
after professional FSI LM-2140W calibration.
A 3D LUT calibration was done and the resulting cLUT was then activated in DaVinci Resolve as a monitoring LUT, the FSI LM-2140W does not have internal LUT storage.
At time of calibration, the unit was 12 years old with an estimated 30,000 hours of usage.
This calibration is a prime example how professional FSI LM-2140W calibration can restore old, out-of-spec displays, making them usable again in color-critical workflows.
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 G2.4 120 nits (SDR)
- LUT holder: DaVinci Resolve 33^3 (tetrahedral)
Native Gamut
This is the native gamut (before calibration) of the FSI LM-2140W compared to the Rec 709 color space calibration target. The display's native gamut barely covers the target color space.
White Point
This is a close-up of the native white point (before calibration) compared to the calibration target of D65, it reveals a significant deviation and a pronounced blue tint.
RGB Balance
This is the Greyscale RGB balance before 3D LUT calibration, very strong blue tint.
EOTF: Gamma
This is the native gamma and luminance response of the FSI LM-2140W. The reference line is configured for the calibration target G2.4. The display in its default native state is a too bright.
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 activated in Davince Resolve as a monitoring LUT with tetrahedral interpolation (most accurate).
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, huge improvement. Shadows are a bit compromised, due to the LCD backlight.
EOTF: Gamma (post)
This is the gamma and luminance response of the FSI LM-2140W after calibration compared to the reference calibration target G2.4. A big improvement, the display tracks the reference much closer - performance in the shadows will always be a bit compromised on LCD monitors, due to the backlight.
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 0.66, the FSI LM-2140W now performs very 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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