I noticed yesterday that none of my monitors were showing greyscale images correctly, edges were being enhanced, creating coloured ringing, not something desirable for an artist, such as myself (or anybody else doing colour-critical work).
This is the test image: http://puu.sh/1W5LG , my monitor outputs the left edge as having a red hue, while the right edge is blued. In fact, the image is totally greyscale (you can check it with the colour selector in Paint). This is a photo of the test image on my monitor, the chromaticity should easy enough to see, http://puu.sh/1W66h .
It affects everything displayed on-screen, in every application. I have been through my monitor's settings, tried different monitors, and tried different computers with different graphics cards, so I am thinking that it is Windows itself that is doing this “enhancement”. I don't even know what this is called, much less, how to disable it. Can anyone help me out?