SyncMaster P2250 Performance
The monitor has 100% brightness and 75% contrast by default. I achieved a 100nit white by dropping both contrast and brightness down to 44%. The monitor regulates its brightness by means of pulse-width modulation of the power of the backlight lamps at a frequency of 180Hz.
The monitor has no RTC in the Normal mode. Most of transitions take 16-20 milliseconds, the overall average being 13.1 milliseconds (GtG).
It is absolutely different in the Faster mode: the response time average is reduced nearly threefold to 4.9 milliseconds (GtG). Like with the P2050, some black-to-gray transitions remain slow, about as long as 18 milliseconds.
The RTC error average is rather low at 6.0%.
If expressed in time units, the RTC error average equals 8.2 milliseconds.
The response time average drops to 3.5 milliseconds (GtG) in the Fastest mode. But we can recall that the P2050 had lots of artifacts in that mode.
Indeed, this model has an RTC error average of 20.4% here. The RTC-provoked artifacts are perfectly visible.
The average pixel relaxation time grows dramatically up to 21.3 milliseconds.
Like with the P2050, the Faster mode seems to be the most optimal one because the Fastest mode makes RTC-related visual artifacts far more conspicuous.
I did not spot any input lag on the SyncMaster P2250 in comparison with a Samsung SyncMaster 710N which has zero input lag.
Brightness and Contrast
The monitor’s brightness and contrast ratio are typical for today’s matrixes although a couple of years ago I would call such results very good for a TN matrix. Dynamic contrast is so high that my calibrator could not measure it precisely.
The average nonuniformity of white brightness is 5.5% with a maximum deflection of 15.4%. For black brightness, the average and maximum are 7.9% and 21.3%, respectively. The pictures based on the measurement results indicate that the monitor has a characteristic X-shaped pattern with brighter areas along the top and bottom of the screen.
As you might expect, the monitor’s color gamut coincides with the sRGB space, with minor discrepancies. The somewhat more saturated red can only be noticed with a naked eye.
At the default settings the gamma curves for green and red coincide with the theoretical curve but the monitor lacks blue: the blue curve is sagging.
When the Contrast setting is reduced in the monitor’s menu, the curves are all close to the theoretical one.
At the default settings the P2250 betrays the same problem as the P2050: a noticeable deflection towards green. I managed to get rid of it by manually selecting R=20, G=39 and B=46 at a Contrast of 50.
Otherwise, the color temperature setup is all right: the variation between the different levels of gray is within a few hundred degrees which is very good for a home-oriented monitor.
The MagicBright modes are set up appropriately, but the Text mode is suitable for working under bright office lighting. If you are working with text at home, you should instead set the monitor up manually and switch into the Text mode to view photographs. The Sport and Movie modes traditionally differ with their color temperature which is set at Cool and Warm. In the other modes the color temperature setting is Normal.