How to Use Night Shift in macOS Sierra 10.12.4

Read the entire article at https://www.macrumors.com/how-to/night-shift-macos-sierra-10-12-4/

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.

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.

macOS 10.12.4 Night Shift Options

macOS 10.12.4 Night Shift Options

  1. Click on the Apple icon in the menu bar and select System Preferences.
  2. Choose the “Displays” icon.
  3. There are three tabs in this menu: Display, Color, and Night Shift. Choose Night Shift.
  4. From the “Schedule” option, choose either “Sunset to Sunrise” or “Custom.”

As the name suggests, the “Sunset to Sunrise” option causes Night Shift to turn on automatically each night when the sun sets and turn off when the sun rises. It’s based on your local sunset and sunrise times. This option requires your location to be enabled in Security & Privacy Preferences so your Mac knows where you are in the world.

The “Custom” option lets you choose a specific start and end time for Night Shift to turn on. With a custom setting, it will turn on and off at the same time each night based on the time that you choose.

v

macOS 10.12.4 Night Shift Custom Options

Adjusting Color Temperature :

In the same section System Preferences that’s used to turn Night Shift on, there’s also an option to adjust the color temperature of the feature to your liking.

macOS 10.12.4 Night Shift Colour Temperature Options

macOS 10.12.4 Night Shift Colour Temperature Options

By default, the temperature is set to the middle, but if you drag the slider to the left, you’ll get more blue light, and if you drag it to the right, you’ll get a deeper yellow shade with less blue light.

Apple warns that using the warmer end of the spectrum could affect the appearance of some onscreen motion.

Night Shift Quick Toggle :

If you want to manually enable or disable Night Shift, there are two ways to do it. You can use the “Manual” setting in System Preferences to force Night Shift to turn on, or you can use the Notification Center, which is quicker. For the Notification Center:

  • Click on the Notification Center menu bar icon, which is denoted by three lines. It’ll open to the Today view.
macOS 10.12.4 Night Shift Notification Centre Options

macOS 10.12.4 Night Shift Notification Centre Options

  • Scroll up to the top of the Notification Center.
  • Click on the “Night Shift” toggle to turn the feature on or turn it off.

Choosing one of the manual toggle options when Night Shift is off will toggle it on until sunrise (or a custom set time) no matter what time it is. Toggling it off will turn it off completely.

Siri :

Siri, introduced in macOS Sierra, can be used to turn Night Shift on or off. Click the Siri button in the menu bar or the dock and say “Turn on Night Shift” or “Turn off Night Shift” to control the Night Shift feature.

macOS 10.12.4 Night Shift Siri Options

macOS 10.12.4 Night Shift Siri Options

External Monitors :

Night Shift extends to external displays that are connected to your Mac, shifting the temperature to a warmer tone to match the Mac’s display. It is not an individual option that can be applied to a display, but rather mirrors the Mac setting.

Night Shift does not extend to connected televisions or projectors, however, nor does it always work reliably with an external display.

Compatibility :

Night Shift works with Macs manufactured in 2012 and later and it is not available on older machines. A full list of devices that support Night Shift is below:

  • MacBook (Early 2015 or newer)
  • MacBook Air (Mid 2012 or newer)
  • MacBook Pro (Mid 2012 or newer)
  • Mac mini (Late 2012 or newer)
  • iMac (Late 2012 or newer)
  • Mac Pro (Late 2013 or newer)
  • Apple LED Cinema Display
  • Apple Thunderbolt Display
  • LG UltraFine 5K Display
  • LG UltraFine 4K Display

Limitations :

There is no option to toggle Night Shift on and off for specific apps, so if you wanted to be able to do something like turn Night Shift off when you use Photoshop or watch videos, there’s no way to do it. It’s all or nothing.

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