Picture quality on Dell U2312HM
Out-of-box picture quality on Dell U2312HM is measured below in the Standard picture preset with Eco settings deactivated.
The graph says this:
The number on the left is the delta value. Delta is a difference between two factors; here it’s the difference between the measured color on the panel and the actual color that is our target.
A delta value lower that 2 results in a visible deviation from the actual color.
A delta value over 4 or 5 results in wrong colors.
A delta value between 1 and 2 results in precise but not perfect colors.
A delta value lower than one results in almost perfect colors. The target is 0.
Everything between 0 and 1 is barely visible to the human eye.
The out-of-box color settings are surprisingly accurate for a monitor in this price range. Color deviations are low, but gamma is also slightly too low in the dark end of the scale, meaning that dark colors are not reproduced perfectly. We aim for 2.2 gamma.
Color temperature is slightly too low compared to our 6500 Kelvin target. Brightness is too high and was measured at 193 cd/m2. But all in all a pretty accurate Standard picture preset on U2312HM.
Dell U2312HM has no pre-calibrated sRGB picture preset like the more expensive pre-calibrated
U2410 model that is still sold as a step-up model from these cheaper eIPS monitors. Therefore I also moved straight to calibration. Here’s my result.
After calibration I managed to improve gamma accuracy, which also ensures more accurate color reproduction. This was no hard task and it was a problem with the contrast setting that was a bit too high.
I also managed to get the monitor close to 6500 kelvin. All in all a good result and after calibration U2312HM matches more expensive IPS based monitors. We never reached a 100 % perfect gamma in the low end, however.
My calibrated settings are.
http://www.flatpanelshd.com/pictures/ikon_kalibreret.jpg
Picture preset: Custom Color
Brightness 63
Contrast 66
Sharpness: 50
Gamma PC
Aspect ratio: Wide 16:9
R 97
G 89
B 100
I have lowered the contrast setting to reach a more accurate gamma curve. I have also lowered the brightness setting and changed the RGB (red, green, blue) settings.
Source:
http://www.flatpanelshd.com/review.php?subaction=showfull&id=1317112577