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LCD MONITOR REVIEW VIEWSONIC VG920 19 INCH


           

lcd monitor review ViewSonic VG920 19 inch
Posted:2006-07-08 By lcd monitor
Number of View:20158




LCD MONITOR REVIEW VIEWSONIC

VG920 19 INCH



By :lcd monitor

Posted:2006-07-08






xtreview is your : Video card - cpu - memory - Hard drive - power supply unit source

lcd monitor review ViewSonic VG920 19 inch



ViewSonic VG920

ViewSonic positions its entire VG series as LCD lcd monitors for processing complex graphics and for playing games. The positioning is strange in both respects. For example, the VG920 model uses a TN+Film matrix without response time compensation which makes it an equally poor choice for processing graphics and for playing dynamic games. The manufacturer touts the 8ms matrix as being very fast, but we know that this 8 milliseconds is only achieved on black-to-white transitions on TN+Film matrixes. Only RTC-capable lcd monitors are really fast, but their specified response is 2 or 4 milliseconds, but not 8 (by the way, the number alone is an indication that the VG920 lacks response time compensation).

ViewSonic VG920

The lcd monitor’s appearance is modest, yet eye-pleasing. The case is painted a matte black with silver speakers underneath. The panel with the speakers is slanted in such a way that they are facing downward at an angle (it can be seen more clearly in the next snapshot). This is of course wrong from the point of view of “serious” acoustic systems (speakers have a directional diagram of their own), but with the sound quality the lcd monitor’s speakers provide it is indeed unimportant where they are directed at. Such speakers are only good for reproducing the simple sounds from Windows, ICQ, etc.

ViewSonic VG920

The base allows changing the tilt of the screen and turning the lcd monitor around its vertical axis. With its rather limited functionality it is at least differs visually from the clumsy and tall stands of some low-end lcd monitors from ViewSonic, e.g. the VX724 and VX924 .

ViewSonic VG920

The lcd monitor has an integrated power adapter, analog and digital inputs, and an audio input. It lacks a headphones output.

ViewSonic VG920

It’s not very easy to control this lcd monitor. The onscreen menu remembers the option you changed last, but this is the only good point about it. The buttons are made not very well. It’s hard to sense them by the touch. The Down button is placed above Up for some reason. The Menu/Exit and Select buttons are traditionally for ViewSonic labeled as “1” and “2”, which only adds more confusion.

Quick access is provided to the brightness and contrast settings (the Up and Down buttons), to sound volume adjustment and to switching between the inputs (the “2” button).

By default, the brightness setting is set at 100% and the contrast setting at 70%. 50% of brightness and 55% of contrast yield 100-nit brightness of white.

Color gradients are reproduced well on this lcd monitor with artifacts barely visible at any brightness/contrast settings. On the other hand, some fuzziness, a sort of noise, can be seen in certain halftones. It is not easily visible, but it’s there. This is probably a defect of dithering (Frame Rate Control, to be exact) because the lcd monitor uses an 18-bit matrix and produces 24-bit color through emulation.

ViewSonic VG920

The lcd monitor reproduces the full range of color tones at its default settings, but the gamma value is obviously too low, making the image look pale and unsaturated.

ViewSonic VG920 lcd monitor

The curves straighten up at the reduced brightness/contrast, but the lcd monitor begins to lose some of the darkest tones: the gamma curves meet the X-axis in the bottom left of the diagram not exactly in the point (0.0), but on the left of it. At these settings (55% contrast) the lcd monitor cannot reproduce about 15-17% of the color range (i.e. these tones are all displayed the same as pure black). This defect is going to aggravate on further reduction of contrast.

ViewSonic VG920 lcd monitor

The VG920 features a rather accurate color temperature setup. The sRGB mode should be a little colder than 6500K, but that’s the only thing I can cavil at here.

ViewSonic VG920 lcd monitor

So, my words about the VG920 lacking response time compensation are confirmed by the tests. The graph shows a typical old TN+Film matrix for which the declared response time has little to do with the real speed. The matrix’s speed is fluctuating around 35 milliseconds through nearly the entire range of transitions, but then drops suddenly on the black-to-white transition to enable the manufacturer to declare a low response in the specs. But few users will ever happen to experience this speed in practice. I want to remind you that white color means the maximum value the matrix (not the lcd monitor!) can receive via its digital interface, not the signal the graphics card outputs! In other words, this pure white color can only be achieved if you’ve selected the highest possible contrast setting in the lcd monitor’s menu. But real lcd monitors are hardly ever used with this kind of setup, so you won’t be wrong to assume that the response time of this lcd monitor is closer to 30 rather than to 8 milliseconds.

ViewSonic VG920 lcd monitor

The contrast ratio is good. It is lower than Samsung lcd monitors have, but above average nonetheless. The maximum brightness of 250 nits is quite high for a PC lcd monitor, too. Note also that the measured brightness is quite close to the specified value.

Thus, the “lcd monitor for games and processing complex graphics” positioning of the VG920 doesn’t seem to have a solid base. It is an ordinary inexpensive 19” model with a slow matrix, average setup quality and unimpressive design. This lcd monitor will do well as an office model, but I wouldn’t recommend purchasing it as a gaming lcd monitor. It is many times slower than the new models with response time compensation, which you should consider first.







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lcd monitor review ViewSonic VG920 19 inch







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lcd monitor review ViewSonic VG920 19 inch
lcd monitor review ViewSonic VG920 19 inch


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