REVIEW: LG Flatron IPS231P Part 9

Interpretation of colorimetric tests

The results of the colorimetric tests are worked up at large in the following sections. Apart from the factory setting, we measured selected image modes as well.

Explanation of DeltaE deviation for colour values and white point.

Explanation of DeltaC deviation for grey values.

Explanation of the reproduction of gradation.

Comparison of the factory setting with sRGB working colour space

Factory setting	Goal	Measured
White point / CCT Kelvin	D65 (6502)	6934
White point XYZ (normalised)	95.04 100.00 108.88	99.88 100.00 123.52
DeltaE from target white point	-	12,0
DeltaE from black body curve*	- (0,08)	9,8
Luminance / cd/m²	-	236,7
Black point / cd/m²	-	0,27
Contrast / x:1	-	876
Gradation / average	sRGB	~2,1 (avg.)

* CCT reference

In factory setting, deviations of colour and grey scales show averagely high values. There is curious behaviour about the gamma curve as it starts somewhat below the set value of 2.2 and continuously drops from there. If the purpose is not binding as far as the colour tone is concerned, the factory setting (aside from the high brightness setting) is practical.

Comparison of the sRGB image mode with sRGB working colour space

sRGB mode	Goal	Measured
White point / CCT Kelvin	D65 (6502)	6934
White point XYZ (normalised)	95.04 100.00 108.88	99.93 100.00 121.77
DeltaE from target white point	-	10,6
DeltaE from black body curve*	- (0,08)	8,7
Luminance / cd/m²	-	167,0
Black point / cd/m²	-	0,19
Contrast / x:1	-	878
Gradation / average	sRGB	~2,0 (avg.)

* CCT reference

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