Most, however, show some level of banding. By matching your calibration gamma value to your monitor, you can significantly reduce banding. This is a good thing for digital image editing, as it allows you to distinguish image flaws from calibration artifacts. Notes: For best results, view the image without passing it through your monitor profile. There are other color stripe gamma test images out there that use the same principle, but nearly all of them only test the gamma at one to three brightness levels. There's only one other test image that uses the entire range, but it doesn't model the sRGB spec, only the more simplistic power function. All monitors come with controls to adjust brightness and contrast. Brightness affects the black level setting of the monitor; contrast controls the picture setting. You should adjust these settings when you first unpack and connect the monitor. When you adjust the monitor, make sure lighting conditions in the room are what they usually are when you are working.
Black level test image
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