REVIEW: Samsung 245T Part 10

Measurements

On its own homepage, Samsung advertises the 24-inch model as having a 15 percent larger colour space thanks to its WideColorGamut-CCFL backlight. There are contradictory details on the Internet regarding the internal Look Up Table. However, since no colour gradients are discarded and no banding occurs at RGB settings between 0 and 60, we strongly believe that the model comes with at least a 10-bit LUT, similarly to the Eizo S2431W.

Below, we have measured how well the Samsung 245T covers various colour spaces. For normal users, the sRGB coverage is most interesting. AdobeRGB and ECI 2.0 are more interesting for graphics artists.

Explanation of 3D diagrams: The white grid represents the standard colour space that is currently being examined and the black grid represents the monitor’s colour space. The actual amount of crossover between the colour spaces is denoted by the coloured cube. Where the white grid protrudes beyond the cube, the monitor’s colour space can no longer display the standard colour space. Where the monitor’s colour space exceeds the standard colour space, the black grid protrudes beyond the cube.

sRgB: 93 % coverage

Please click the diagram for enlarged view.

AdobeRgB: 90 % coverage

Please click the diagram for enlarged view.

ECI 2.0: 83 % coverage

Please click the diagram for enlarged view.

Coverage of both sRGB and AdobeRGB is good to very good; for ECI 2.0, it could be little better. However, the LCD monitor keeps Samsung’s promise of a 15 percent larger colour space as compared with conventional monitors.

Explanation of deltaE deviation

The deviation of colour values is measured in deltaE 94 (dE). Numerous grey gradients and the primary (RGB) and secondary (CMY) basic colours are measured. A deltaE value of 1 represents the smallest difference in colour that can be perceived by the human eye. Most people recognise a difference in colour from a value of 3. However, our eyes are more sensitive to green tones, so that smaller deviations can be perceived for these colours. The average deviation should be less than 3 dE, the maximum under 10 dE, or better under 6 dE. Up to 10 dE, two colours are still sufficiently similar.

Even in its factory settings, the Samsung 245T offers an acceptable image with regard to the sRGB standard, important for normal users and Internet surfers. Grey gradients have no colour cast and the monitor only demonstrates a weak point when it comes to blue. Users without calibration devices can easily live with an average deltaE of 4,4.

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