Greyscale
Monitor calibration
Do you see, what others see? Do see, what's really there? This site is supposed to show you, whether your internet browser, your software and your screen are correctly adjusted. This way, you won't suffer any disadvantages by surfing through this homepage.
Here, all shades of grey should be displayed in equal intervals. If this isn't the case, your computer screen isn't properly adjusted. This means, your monitor doesn't display colors and contrasts correctly and you don't see what you are supposed to see.
These gradation from white to black gives you the possibility of testing if you have a full chromatic scale. You should be able to count 11 different shades of grey, starting from a pure white, going to a pure black.
Of course, adjusting your monitor to such grey scales can never replace a calibration, but you're already making a big step towards the correct displaying.
The monitor calibration is the exact adjustment of color and brightness display of a screen in the course of color management. Thereby, the color displaying of your monitor is measured with a color measuring device. Thus, the user or a software, can correct faulty settings. Meanwhile, color measuring devices (colorimeters) are affordable to everyone. The software to this devices saves a correction table to the graphic board.
The neutral wedge is a supporting device in reproduction. It displays the intervals between brightness or density values black and white as a gradation, mostly in form of a longish stripe of film or paper. It's used to get a calibration medium to adjust and judge the miscellaneous absorbing and reproduction capacities of different devices.
The most common form of the neutral wedge is the component of the normed IT8 chart, which was design by Kodak. Herein, the span between black and white isn't displayed as an "analog" gradation, but in 22 steps with increasing grey values. Such a chart comes with most better devices for picture editing and treatment, such as digital cameras, scanners or screens.
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