Benq SW270C Calibration Overview
The SW270C is a 27-inch IPS monitor from Benq, designed for photographers and creative professionals seeking high color accuracy and detail. It features a 2560 x 1440 QHD resolution, wide gamut, a static contrast ratio of 1000:1 and a wide viewing angle of 178 degrees, ensuring vibrant and precise color reproduction.
The Benq SW270C is en entry level choice in the professional display market, used for color work, editing or graphic design.
Below is an overview of the display's performance before and after professional Benq SW270C calibration.
A 3D LUT calibration was done and 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: K-10-A
- Spectro: CR-300
- Patch generator: DaVinci Resolve, SDI out
- Calibration target: Rec 709 D65 G2.4 100 nits (SDR)
- LUT holder: BMD Micro Converter 33^3
Native Gamut
This is the native gamut (before calibration) of the Benq SW270C 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.
The white point was calibrated manually using the display's CMS gain and bias controls.
White Point
This is a close-up of the native white point (before calibration) compared to the calibration target of D65. It shows a small deviation from target and a slight blue tint.
RGB Balance
This is the greyscale RGB balance before LUT calibration. The greyscale was manually calibrated using the display's CMS gain and bias controls, it has a slight blue tint.
EOTF: Gamma
This is the native gamma and luminance response of the Benq SW270C. The reference line is configured for the calibration target of G2.4. In its default native state, the display is a bit too bright.
Spectrum Analysis
This is the spectrum of the Benq SW270C 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 well, 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 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 Benq SW270C 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 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 0.63, the Benq SW270C now performs very well given that the JND (just noticeable
difference) for human vision is set at a dE 2000 value of 2.3.
All 51 points with a dE 2000 > 2 are in the shadows, the higher color error is caused by the LCD backlight.
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