Articles: Monitors
 

Bookmark and Share

(4) 
Pages: [ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 ]

SyncMaster P2050 Performance

By default, the monitor has 100% brightness and 75% contrast. I achieved a 100nit white by choosing 33% brightness and 36% contrast. The monitor regulates its brightness by means of pulse-width modulation of the power of the backlight lamps at a frequency of 180Hz.

Response Time

The monitor has no response time compensation in the Normal mode. The response time average is 14.6 milliseconds (GtG) with a maximum of over 28 milliseconds.

In the Faster mode the response time average lowers to 5.9 milliseconds (GtG). Interestingly, transitions from black to gray remain rather slow whereas gray-to-gray transitions get much faster.

The RTC miss (when the pixel brightness is set higher than necessary) is rather low at an average 4.1%.

The same value expressed in milliseconds (the time a pixel takes to reach the desired state after an RTC miss) has an average of 7.5 milliseconds. The RTC miss is the biggest on transitions from lighter to darker halftones, but is not generally conspicuous. RTC-related artifacts are not annoying overall.

The Fastest mode lowers the response time average a little more to 4.3 milliseconds (GtG). The compensation still does not work on transitions from black to gray.

Nearly every transition is accompanied with an error. The average RTC miss is 16.5%, which is quite a lot.

The pixel takes an average 20.6 milliseconds to get to the desired state after such a gross miss. This is longer than the duration of one frame (16.7 milliseconds). Such errors are conspicuous and rather annoying both at work and in games.

Thus, when it comes to response time compensation, the Faster mode seems to be the most optimal. The monitor is too slow in the Normal mode whereas the Fastest mode lowers the response time average slightly but makes RTC-provoked visual artifacts much more conspicuous.

Input Lag

I did not spot any input lag on the SyncMaster P2050 in comparison with a Samsung SyncMaster 710N which has zero input lag.

Brightness and Contrast

The monitor’s maximum brightness is over 300 nits and its maximum contrast ratio is about 700:1. My calibrator reported zeroes in the dynamic contrast mode as its bottom measurement level is 0.02 nits.

Brightness Uniformity

The average nonuniformity of white brightness is 5.2% with a maximum deflection of 15.5%. For black brightness, the average and maximum are 3.8% and 14.0%, respectively. These are very good results.

Color Gamut

The monitor’s color gamut coincides with the sRGB space, being somewhat smaller in blues but somewhat larger in reds and greens.

Gamma Curves

The gamma curves are acceptable at the default settings, going just slightly higher than the ideal curve for gamma 2.2.

At the reduced brightness and contrast settings the curves improve and nearly merge into each other, but still go above the ideal curve, especially in darks. It means the picture looks somewhat brighter, with lower contrast, than necessary.

Color Temperature

The default color temperature setup (the user can choose from three predefined modes) is good excepting the deflection towards green which gets stronger in the warmer modes. I managed to eliminate this drawback by choosing R=43, G=39 and B=50 in the manual adjustment mode at a contrast value of 50.

The numbers agree with what I’ve said except that they are unaffected by the deflection towards green. Strictly speaking, it is incorrect to measure color temperature if there is a deflection towards pink or green. Therefore this section begins with a diagram that makes such deflections clear.

MagicBright Modes

MagicBright is a handy way of quickly changing the monitor’s brightness, for example when you want to switch from an office application to a game or back again. Samsung monitors offer five preset modes which are not editable by the user. Besides, the MagicBright button enables a dynamic contrast mode.

The MagicBright modes are set up neatly enough but the Text and Internet ones suit better for viewing photos or watching movies. They are too bright for text-based applications. It is better to set the monitor up manually for working with text. MagicBright technology does not bring about any color distortions. The color temperature is set at Cool in the Sport mode, at Warm in the Movie mode and at Normal in the other modes. Alas, you cannot adjust the color temperature manually in the MagicBright modes and the monitor will still have a slightly excessive green.

 
Pages: [ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 ]

Discussion

Comments currently: 4
Discussion started: 11/22/09 07:02:37 PM
Latest comment: 04/14/10 01:29:55 AM

View comments

Add your Comment