The calibration of a monitor plays an important role, and not just for professional users in advertising agencies or in electronic page setting (CEPS), who are dependent on natural, or, to put it better, “neutral” colour reproduction.
Ambitious PC users in the amateur sector also wish to be able to display their images or games as colour accurately as possible. Amateur photographers often purchase high-quality digital mirror reflex cameras and are then disappointed with the pictures they take when they view them on the monitor.
Read All Hardware and software calibration of monitors for beginners article on prad.de
Digital Quality Tools
The Digital Quality Tool (DQ Tool) was developed by leading manufacturers and suppliers of digital imaging services at the initiative of CIPHO and the German Photographic Industry Association (Photoindustrie-Verband e.V.). The DQ Tool provides a simple and fast method to achieve a more uniform print quality for private users wishing to edit digital photos on their computers. This is done by adjusting the monitor to match a reference print
more on cipho.de
Here it’s a resource to detect your gamma.