Maximises the colour gamut of your printer and paper. The colour gamut is basically all the colours that a device can
use - so the gamut of a monitor is all the colours it can display, whereas the gamut for a printer is all the colours that it
can print (although for a printer, this is also dependant on what paper is used too).
When you create or capture an image, you usually set a colour profile to your image - this is different to the printer profile.
It defines what colours can be used within the image i.e. the colour gamut of the image. Typically this is sRGB or
Adobe RGB.