Articles: Monitors

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Now you’ll see the following when you enter the menu:

The extended menu isn’t as pretty-looking as the main one, but offers much more settings. Besides the settings found in the main menu, there are:

  • Various options for fine-tuning the analog signal. I don’t think this is important, though, as analog signals are steadily becoming a thing of the past
  • Manual interpolation setup: the main menu only offers you to enable or disable interpolation (the scaling-up of low-resolution video to the monitor’s resolution) while the extended menu allows to specify how much the picture must be enlarged. Thus, you can set the monitor up so that it enlarges a low-res picture, but not to full screen. Not a vitally important feature, but anyway.
  • Select the color (green or blue) and brightness of the Power indicator on the front panel. This is indeed a valuable setting because modern monitors’ bright LEDs look distracting to many users.
  • Switch the monitor into black-and-white mode
  • Enable/disable the automatic rotation of the menu and image when the screen is turned around into portrait orientation
  • Specify a schedule for the monitor to automatically turn on and off
  • Enable/disable response time compensation. I think this feature is disabled by default in order not to shock the potential customer with new-fangled technologies (I should remind you again that the professional monitor market is rather conservative) which are associated with gaming monitors in the first place. But the compensation is implemented properly, almost without artifacts, so nothing prevents you from turning it on. I should acknowledge that the response time isn’t important for the applications these monitors are intended for (e.g. the EIZO ColorEdge CG21, also intended for professional color processing, has a response time of 50 milliseconds!), yet a faster monitor leaves a better visual impression due to the lack of trails behind the mouse pointer and moving windows.

Below are two-dimensional response time diagrams for both monitors, with RTC enabled:

My response time measurements on halftone transitions yielded an average of 11.8 milliseconds for the LCD2190UXi (with an average RTC error of 3.0%) and 12.0 milliseconds for the LCD2190UXp (and average RTC error of 0.6%). Although the average numbers are almost identical, the monitors behave differently on different color tones: the model with an S-PVA matrix is slower on very dark tones, but faster on all others.

The gamma curves of the monitors (the diagram shows the results of the LCD2190UXi at the default settings) are set up almost ideally with barely noticeable deflections from the theoretical curves. The monitors superbly reproduce the entire range of colors at any brightness and at a contrast of 0-50%. When the contrast setting is higher than 50%, details are lost in bright colors.

The color temperature setup is excellent, too. The difference between the levels of gray is comparable to the calibrator’s accuracy in most of the modes!

In my previous article called Contemporary LCD Monitor Parameters: Objective and Subjective Analysis I showed a picture composed of three photographs to illustrate a monitor with inaccurate color temperature setup. There were four squares of different levels of gray on each photograph (25%, 50%, 75% and 100%), but the gray balance was set up by the rightmost square in the first photo, by the third-from-left square in the second photo, and by the second square in the third photo. The color temperatures of the squares were different on that monitor, and the three photographs were different, too. On each of them there was only one really gray square (the one the gray balance was set up by), and the others were colored.

Here is the result of the same test on the NEC LCD2190UXp (the color temperature was set at 6500K in the menu):

This is an ideal picture: the squares are all gray. You can examine the squares with the color picker in Adobe Photoshop to make sure there is a negligible difference between them.

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