For a real-world example, take a picture of someone sitting on grass and notice how the green reflects onto their skin. The natural colors around your chosen room will affect how you see the display. You’ll also want to make sure Night Shift or any TrueTone options are disabled. Having your monitor at maximum brightness will let you calibrate your Mac’s display optimally yet also hit the “sweet” spot when it comes to efficiency. Once optimized, you’ll be able to calibrate your Mac’s display (and view it) with greater accuracy: How to Prepare to Calibrate Your Mac’s Displayīefore you begin the calibration process, there are a few external factors to consider. However, this doesn’t take into account your unique situation, such as viewing location, ambient lighting, and post-processing workflow. Usually, the “sRGB color profile” is set as standard, as this is a good middle ground for most users. There are a number of different profiles with varying “gamuts.” In other words, while some profiles will focus on accurate color rendition, others will look to display as many colors as possible.