Monoprice IPS-Glass Panel Pro 27" LCD Monitorby Chris Heinonen on October 22, 2013 2:40 AM EST
All calibration measurements are done using SpectraCal’s CalMAN 5.1.2 software with a custom workflow. Measurements are done using a C6 colorimeter that is first profiled against an i1Pro spectrometer to ensure accurate results. There are two sets of targets we use. Pre-Calibration and our first calibration aim for 200 cd/m^2 with an sRGB gamut and a gamma of 2.2. This is a common real-world setting for a display. The final target changes the light level target to 80 cd/m^2 and the gamma curve to the tougher sRGB standard.
|White Level (cd/m^2)||200.35||199.3||80.05|
|Black Level (cd/m^2)||0.2025||0.22||0.1669|
|Color Checker dE2000||3.2142||0.99||0.9496|
There are a few preset modes in the Monoprice Glass-IPS Panel Pro display but the Standard mode is the most accurate one. Using Standard and the Normal color temperature setting produces the most accurate results. However the display still has a serious lack of blue in the grayscale and the gamma curve is well off the target. Colors also show large errors, especially in skin tones, and they are exacerbated at lower levels due to the poor gamma. The overall errors levels are OK but not wonderful.
With our 200 cd/m^2 calibration target the Monoprice improves immensely. The contrast ratio has a slight drop to 906:1 but the grayscale, RGB balance, and gamma are now virtually perfect. More impressive is the improvement in the color gamut, with an average dE2000 for the color checker chart of only 0.99. A few samples creep above dE2000 levels of 2.0 with a little over-saturation in the red gamut, but otherwise this performance is phenomenal.
The 80 cd/m^2 results are not quite as good. Due to the high minimum brightness setting the contrast has to drop all the way down to 480:1 to make our light output target. The grayscale and gamma are still virtually perfect, but you won’t have the same pop that you do with a target of 160 cd/m^2 or higher. What you will see are colors that are still as accurate as the prior calibration and virtually perfect.
Considering the color accuracy of this display after calibration, it seems like a cheap option for an image professional that wants color accuracy. Fortunately for them contrast ratio usually isn’t as important as overall accuracy so that lower contrast level may still work fine. That small change could produce a display with one of the overall best set of post-calibration benchmarks that I’ve yet to test if it were made.