Calibrating your Mac monitor is an essential step in achieving accurate color representation for photo printing. While calibration devices such as Spyder or X-Rite ColorMunki can provide precise and consistent results, they can be expensive and tricky to set up. If you don’t have access to a calibration device or prefer not to use one, you can still achieve better color accuracy by calibrating your Mac monitor using the System Preferences. In this guide, we’ll show you how to calibrate your Mac monitor without a calibration device, so you can achieve optimal color representation for photo printing.