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REVIEW: Samsung 275T Part 7


ECI RGB 2.0 (L-Star approved) (Coverage approx. 91%)

ecirgb1 ecirgb2

Three-dimensional comparison of the monitor’s colour space (black grid) with the ECI RGB 2.0 colour space (white grid). The coloured box shows the intersection, or that part of the target colour space that the monitor can display. Please click the images for enlarged view and explanation.

ISO Coated (Coverage approx. 100%)

isocoated1 isocoated2

Three-dimensional comparison of the monitor’s colour space (black grid) with the ISO Coated colour space (white grid). The coloured box shows the intersection, or that part of the target colour space that the monitor can display. Please click the images for enlarged view and explanation.

Since L-Star ( L* for short) has been adopted as the current standard of the European Color Initiative (ECI) in the ECI-RGB 2.0 (ECI 2.0 for short) working colour space, calibration to this standard is particularly interesting for graphics work in the printing media sector.

ECI 2.0 uses the same colour space and white point as its predecessor, ECI 1.0, but instead of gamma 1.8, it uses a grey gradient curve approved by L-Star. The Samsung SyncMaster 275T could be calibrated very well to ECI 2.0 in our test.

However, you should bear in mind that because of the lack of RGM settings on the LCD, the white point can only be adjusted using software calibration. Thus, the following results are based on the factory settings of the SyncMaster 275T.

Comparison of the calibrated profile with ECI 2.0

Calibrated ECI 2.0 Goal Measured
5000 5000
120 119
0,00 0,12
Lstar 2,32
max. 987

Commentary on the deltaE deviation:

The deviation of the colour values is given in deltaE 94 (dE). We measured numerous grey gradients, the primary (RGB) and secondary (CMY) basic colours. A deltaE value of 1 represents the smallest deviation that the human eye can perceive.

Most humans recognise a difference in colours from a value of 3. However, our eyes are particularly sensitive to green tones so that even smaller differences can be noticed for these tones. The average deviation should be under 3 dE and the maximum should be under 10 dE. Up to 10 dE, two colours are still sufficiently similar to each other.

Although the extended gamut of the SyncMaster 275T does provide an improvement basically speaking, users who do not have calibration devices or expensive photo-editing software such as Photoshop will have difficulty.

The basic colours of the larger colour space, which are more strongly saturated in the factory settings, deviate significantly from the sRGB colour space. Since Samsung does not offer any pre-defined sRGB profile for the 275T with a correspondingly reduced colour space, there is no possibility to get a colour-accurate sRGB image for editing your own photos or videos.

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