REVIEW: Samsung P2250 Part 7

Contents:IntroductionScope of supplyDesign and mechanicsOperational noisePower consumptionConnectorsControlsOSDSoftwareImage qualityBrightness distributionViewing angleMeasurements and calibration3D colour space comparisondeltaE deviationUGRA testInterpolationInterpolation: TextInterpolation: GamesImage sharpnessResponsivenessInput lagDVD and VideoVideo signal processingSupported refresh ratesScalingConclusion

Overall, the monitor delivers an average image in the factory settings.

Profile precision

When the monitor is calibrated, we first check the profile precision. Provided that the measuring device is functioning precisely, low deviations allow us to conclude that the monitor characteristics are captured correctly and remain stable. The CMM (ColorManagementModule) colour management software can thus transform as ideally as possible into Monitor RGB (the monitor colour space sets the final limit). If the deviations increase noticeably at a later point, it is time for a new calibration and subsequent profiling.

Even in unmanaged environments, the user can also benefit from the changes made to the screen settings and the graphics card LUT (or in this case, the monitor LUT), which should lead to a neutral grey axis and the desired gradation and white point.

Below, we will limit ourselves to the monitor profile which was created within the scope of the calibration to the recommendations for sRGB. After calibration and profiling, a profile test was carried out with the software used, which compares the actual status of the monitor with the transformations arising from the monitor profile.

The reference values arise from the monitor profile accordingly:

Parameter	Goal	Measured
White point / CCT in Kelvin	D65 (6504)	6737
White point XYZ (normalised)	95.05 100.00 108.72	94.97 100.00 108.15
DeltaE from target white point	-	0,4
Luminance / cd/m²	140	131,6
Black point / cd/m²	-	-
Contrast / x:1	-	-
Gamma / average	sRGB (~2,2)	~ 2,16

Comparison of factory settings with sRGB standard

Calibrated	Goal	Measured
White point / CCT in Kelvin	D65 (6504)	6737
White point XYZ (normalised)	95.04 100.00 108.88	96.42 100.00 113.12
DeltaE from target white point	-	3,5
Luminance / cd/m²	140	131,6
Black point / cd/m²	Native	0,16
Contrast / x:1	Native	822
Gamma / average	sRGB (~2,2)	~ 2,53

Contents:IntroductionScope of supplyDesign and mechanicsOperational noisePower consumptionConnectorsControlsOSDSoftwareImage qualityBrightness distributionViewing angleMeasurements and calibration3D colour space comparisondeltaE deviationUGRA testInterpolationInterpolation: TextInterpolation: GamesImage sharpnessResponsivenessInput lagDVD and VideoVideo signal processingSupported refresh ratesScalingConclusion

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