REVIEW: Samsung P2250 Part 8
In order to gain an initial impression of the actual deviations in colour management software, we created suitable test patterns in Adobe Photoshop, provided them with the working colour space profile (sRGB) and carried out measurements. Adobe (ACE) was used as CMM.
Naturally, we cannot draw any truly detailed picture with the limitation to primary and secondary colours. Thus, for example, undercoverages may not be noticeable if relevant hues which lie outside the monitor’s colour space are not present in the image being viewed. Because of the relatively colorimetric rendering intent, no colour compressions arise because of the CMM.
The calibration brings the grey level reproduction to a very good level, with all values under the level of a noticeable deviation. In the colours, the values for blue and green deviate somewhat from the remaining good values. The white point and black point have gotten closer to the ideal value, with the brightness slightly lower than the target. Apart from a slight peak at 70 and a larger deviation at 90 percent, the gamma is precisely on the target curve. The contrast also remained at a value of more than 800:1 even at the considerably low luminance, which can also be seen as good. In the amateur sector, the calibrated P2250 can thus also be used for graphics work.
Representation of the RGB correction curve of the graphics card after sRGB calibration. The closer the three coloured lines lie to the 45°, the fewer colours must be discarded by the graphics card for correct calibration and the more intact the colour gradients remain.
Finally, we calibrated the Samsung P2250 to the UGRA recommendations (5800K, gamma 1,8 and luminance 120 cd/m²), in order to determine its suitability for digital pre-printing processes/soft proofing. However, the certification can of course also be achieved with other parameters. The monitor did not pass the UGRA test when we checked it using the iColor Display software. The grey values are too low at 88,6 percent and this prevents the monitor from achieving UGRA certification, which demands at least 95 percent in this area.
The detailed UGRA UDACT report can be downloaded as a PDF file.
The use of the native resolution is recommended for LCD monitors, since the best possible image is displayed here. Some software, especially in games, demands a lower resolution and in addition, resources can also be spared in this way.
In the menu on the Samsung P2250, the image sizes "Auto" and "Wide" can be selected. In the "Wide" setting, each resolution is stretched to the full size of the screen and in the "Auto" setting, it is displayed with black bands on the sides. Therefore, 1:1 display is not possible with this setting, since the height of the screen is always used completely, even at very low resolutions such as 800 x 600 pixels. It was also not possible to force 1:1 display via the Nvidia system control.
For the following pictures, the pre-defined value "Wide" was used for all resolutions.
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