"There are two main reasons to calibrate any display. One is to match it to the other devices in the production chain like cameras and printers. In a photo studio, it’s crucial that the camera, printer, and monitor all conform to the same color and gamma profile. That way, what the photographer sees through the lens is what he sees on paper and on the screen. The second reason, the one we’ll be exploring here, is to match your display to a particular standard.
Why match a standard? It’s simple, really. Nearly every game or movie you view on your computer is mastered to the Rec. 709 video standard. This is nothing more than a specific set of parameters for color gamut, white point, and gamma. It covers other areas too, but for the purposes of display calibration, we only need to worry about those three. We’ll discuss what those parameters are and their importance in the first four sections. But calibrating your display to that standard ensures that you see exactly what the content creator saw."
Don't confuse a gaming website with photo work.
