Articles: Monitors
 

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The monitor’s brightness and contrast are set at 100% and 70% by default. I achieved a 100nit white by selecting 43% brightness and 50% contrast. The monitor regulates its brightness by means of backlight modulation at a frequency of 240Hz.

Color gradients are reproduced with barely visible banding.

The color gamut is standard. It is larger than sRGB in greens, smaller in reds and coinciding with it in blues.

 

The average nonuniformity of white brightness is 4.9% with a maximum deflection of 14.2%. The average and maximum for black are 6.8% and 15.8%, respectively. The pictures based on the measurement results show that the screen looks almost ideal when displaying white. When displaying black, there is a brighter spot at the top of the screen and brighter bands along the top and bottom. The overall result in this test is good.

The gamma curves are good at the default settings except that the characteristic bend in the top right of the diagram indicates an exceedingly high level of contrast. The Contrast setting is set at 70% by default, but you should keep it below 65% if you care about color accuracy.

The mentioned defect disappears at the 100nit settings. The gamma curves get closer to each other and to the ideal curve for gamma 2.2.

The color temperature setup is rather odd as the warm modes (6500K, 5400K and sRGB) are very good while the cold modes are very bad. You may want to select the 6500K mode (the sRGB mode is the same as 6500K but locks the user-defined brightness and contrast settings while the 5400K mode is going to look too warm for most users).

As I wrote at the beginning of this section, specifications do not always agree with the real parameters of monitors. That’s what we have here: the VX2255wmb is specified to have a contrast ratio of 700:1, which is rather low for today, but it proves to be the best among the five tested models in this parameter according to my measurements.

As you may have expected, this 5ms TN-based monitors is not very fast. Its response time average is 13.5 milliseconds (GtG) with a maximum of 27.5 milliseconds.

Thus, the main problem with the ViewSonic VX2255wmb is its design and ergonomics. The tiny stiff controls and the tall stand may be inconvenient. The tallness of the monitor is especially annoying for two reasons. First, ergonomics demands that the user’s eyes were at the same level with the top edge of the screen, looking somewhat downward. This prevents the eyes from drying out and getting tired at work. Second, it is better to look at TN matrixes from above due to their specifics. Otherwise the top part of the screen looks darker (many users think this is due to nonuniform brightness, but that’s wrong). Of course, it is hard to meet both requirements if you have a monitor with a large 22-inch screen and a tall stand.

Highs:

  • Nice appearance
  • Good color reproduction setup in the 6500K and 5400K modes

Lows:

  • Very unhandy controls
  • Very tall stand
  • No factory-set image modes
  • Slow matrix

Recommended usage:

  • Text-based applications (documents, spreadsheets, Web)
  • Viewing and simple editing of photographs
  • Movies and games that don’t need a fast matrix
 
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