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Online Monitor test

By Torben Rasmussen (@flatpanels)
15 Dec 2008

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To aid us in our testing of displays here at flatpanels.dk, we have collected a series of useful test images into our own little program. The following features are available in this test (see details in the description below):

  • Evaluate the ability to produce the darkest colors of black and the brightest colors of white
  • Evaluate trailing
  • Examine the color scale
  • Examine the dynamic range of the display
  • Evaluate the homogenuity of the backlight
  • Examine the display for pixel errors
  • Moire effects and 1:1 pixelmapping

The test is available in 3 different versions, which will all work at all display resolutions:

  • Ordinary HTML browser window you can maximize yourself (Macromedia Flash 8 plugin required)
  • HTML popup in 1280x1024 oplÝsningen as default, but the window can be maximized to suit your needs (Macromedia Flash 8 plugin required)
  • Executable .exe version (1.6 MB) that does not install anything on your computer. Press CTRL+F or Esc to exit full screen mode (or use the program menu). No plugin required.

In the test there will be a help-box that will tell you what to look for in a specific test. Choose your version below:

You can also access this test directly online by following this link: http://tft.vanity.dk

NB! This program is protected by copyright and can not be distribued without written authorization from Torben Rasmussen from flatpanels.dk. This tool is provided for personal use only!

Explanation of the test

Main page : The test consists of several elements and the first that will meet you is the front page, the info box and the menu. To access the menu, move your mouse to the top of the screen. You can switch off the info box through the menu as well as change from full screen mode (.exe version only) and chance page.

On the front page you can test the monitors ability to show close shades of grey. Steps of 1% is shown at each end of the scale.

Homogenuity: Here you can look for pixel errors and examine the homogenuity of the backlight. Use the black or white background to look for constantly lit or dim pixels. In this test there must be no pixels that has a different coloration than the rest of the screen. Use the black color to look for backlight bleeding.

Text reproductio : Here you can see if the screen has a tendency to create shadows behind text, which can be most anoying. Chose your text and background color using the sliders.

Trailing: Here you can investigate a simpel type of trailing (do not mistake this for an actual gaming experience) by passing a box along the screen on different background colors. Keep in mind that the movement of the box is created by the processor in your computer and not by your graphics card - for this reason short flashes of tearing may appear, which is not an error in either screen or computer.

Color reproduction: Here you can investigate the displays ability to produce colors and gradients. Use this to check for banding or dithering phenomena.

1:1 pixelmapping: This test is mostly relevant for the TV-people. You can test if your display can accept resolutions from your PC that is in 1:1 physical correlation with the actual resolution of the display.


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