Monday March 27, 2017 12:51 pm PDT by Juli Clover
Night Shift, the feature first introduced in iOS devices with iOS 9.3, has expanded to the Mac with the release of 10.12.4. Night Shift is compatible with 2012 and newer Macs, so it won't work on older machines. For those unfamiliar with Night Shift, it's designed to cut down on the amount of blue light you're exposed to during the evening by shifting the display of a Mac to a more yellow tone. Blue light is said to have a harmful effect on your circadian rhythm, making it harder to fall asleep and stay asleep. Studies suggest that eliminating blue light exposure at night might help you sleep just a bit better, but it does significantly change the look of your display. Many Mac users have been using blue light reduction software f.lux for years now, but with Night Shift, there's no need to install an additional app because it's an operating system feature. Subscribe to the MacRumors YouTube channel for more videos. Turning On Night Shift Night Shift's controls can be a little bit difficult to find when you go to use the feature for the first time. The Night Shift options are located in the display section of System Preferences.