I noticed that there are several different figures published or quoted for the color gamut specification of each display monitor model. What is the difference between the figures?
The color gamut of a display can be calculated in many different ways, and there is no industry standard method. Therefore unless the exact method used to calculate the values is specified it is difficult to compare values between different displays. NEC calculates the Color Gamut Size and Coverage specifications as a 2D gamut area in CIE 1931 xy or CIE 1976 u’v’ colorspace using measurements from a very precise spectrophotometer. The display color gamut is compared to that of a reference gamut, such as sRGB, AdobeRGB, or NTSC (1953). The Gamut Size specification is the total relative display gamut area and includes any colors outside the reference gamut expressed as a percentage. In other words it is the area of the display color gamut triangle vs. the area of the reference color gamut triangle, and does not take into account if the gamuts actually overlap or not – it is just the ratio of the total areas The Gamut Coverage is the relative display gamut area contained inside the refere
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