SyncMaster P2270 Performance
The monitor has 100% brightness and 75% contrast by default. I achieved a 100nit white by choosing 50% brightness and 52% contrast. The monitor regulates its brightness by means of pulse-width modulation of the power of the backlight lamps at a frequency of 180Hz.
RTC is off in the Normal mode. The response time average is 13.4 milliseconds (GtG).
In the Still mode the speed improves dramatically up to 4.5 milliseconds (GtG).
The artifacts resulting from inaccuracies of the RTC mechanism are low or absent with most of transitions. However, there are a few peaks in the diagrams, so the average RTC miss is 9.0%. That’s not exactly low, but acceptable.
The average time a pixel takes to relax into the necessary state after an RTC miss is 11.9 milliseconds. That’s not much, but some of the models I have tested in this review are better in this respect.
The Movie mode cuts the response time in half: down to an average 2.4 milliseconds (GtG).
Like with the above-discussed models, you have to pay for that with a high level of RTC artifacts: the RTC error average is 24.1%.
The average pixel relaxation time is 23.8 milliseconds, which makes RTC-provoked artifacts conspicuous. So, like with the previous models, you may prefer the Still mode as the most optimal one.
I did not spot any input lag on the SyncMaster P2270 in comparison with a Samsung SyncMaster 710N which has zero input lag.
Brightness and Contrast
The monitor has almost the same brightness and contrast ratio parameters as the SyncMaster P270. Interestingly, the 50 series is indeed consistently brighter just as the specs suggest. Anyway, the brightness of 235 nits should be more than enough for any practical purposes.
The average nonuniformity of white brightness is 5.9% with a maximum deflection of 17.1%. For black brightness, the average and maximum are 6.9% and 21.3%, respectively. The numbers are far from perfect, especially on black where the center and bottom of the screen are brighter than the rest of it.
The monitor’s color gamut is almost the same as the standard sRGB color space.
At the default settings the gamma curves of different colors differ from each other: the gamma is too low for blue (the curve is closer to the diagonal straight) and too high for red. That’s not a big problem and I have seen worse results from other monitors, but the curves just don’t look neat.
When the contrast setting is reduced in the monitor’s menu, the gamma for red improves. The appropriate curve rises up to nearly coincide with the green curve as well as with the ideal curve for gamma 2.2. The level of blue in halftones is still somewhat too high.
As opposed to the previous models, the P2270 not only has too much of green but also a large dispersion of temperature among the different levels of gray. You can see it in the diagram that the color coordinates of white and gray stand far apart.
The table with numeric values of temperature confirms what I’ve written in the previous paragraph: the different levels of gray differ by 3000 to 10,000 degrees which is very much. When I tried to adjust the monitor manually at 50% contrast and selected R=50, B=38 and G=43 in the menu, the temperature dispersion diminished to 2000K and the deflection towards green vanished.
Running a little ahead, I should say that the P2270 was the only Touch of Color model with such a sloppy color temperature setup. Perhaps it was just a bad sample, although I cannot of course guarantee that other samples of the P2270 are going to be better in this respect.
The MagicBright modes are set up properly enough. The Text mode is indeed appropriate for working in text-based applications under good office lighting (if you use the monitor at home, under mild evening lighting, you may want to set the monitor up manually). The other modes are suitable for games, photos and movies.