Ad­just Sierra’s Night Shift set­tings

Prop­erly set the new Night Shift set­tings in macOS Sierra 10.12.4 and get a good night’s sleep, Ro­man Loy­ola ex­plains all

Macworld - - CONTENTS -

Night Shift is the ma­jor new fea­ture in macOS Sierra 10.12.4. Let’s take a look at what Night Shift does, and how you can ad­just it to best suit your Mac habits.

What does Night Shift do?

Night Shift was first in­tro­duced in iOS 9.3. It’s a set­ting that ad­justs your dis­play’s colours when it’s night time. When the sun sets, your Mac’s dis­play will use less blue light, cre­at­ing a pic­ture that’s ‘warmer’. You’ll no­tice a yel­low­ish cast on the screen.

Ap­ple says many stud­ies show that the blue light usu­ally used by dis­plays can af­fect your cir­ca­dian rhythms and your sleep pat­tern. When you use Night Shift, the warmer colours aren’t as harsh on your eyes and bet­ter for your cir­ca­dian rhythms. Whether this holds true for you or not, you now at least have the op­tion to use Night Shift. It works with:

■ MacBook Air (mid 2012 or later)

■ MacBook (early 2015 or later)

■ MacBook Pro (mid 2012 or later)

■ Mac mini (late 2012 or later)

■ iMac (late 2012 or later)

■ Mac Pro (late 2013)

Night Shift and mul­ti­ple dis­plays

If you have mul­ti­ple dis­plays, Night Shift works only on the dis­play that you use as your pri­mary dis­play. If you don’t see the Night Shift op­tion for the dis­play you want, you need to make it the pri­mary. Here’s how to set your pri­mary dis­play.

■ Click on the Ar­range­ment tab in the Dis­plays sys­tem pref­er­ence ■ Click on the menu bar and drag it to the de­sired dis­play

How to turn Night Shift on

Night Shift is part of the Dis­play sys­tem pref­er­ence. Here’s how to turn it on.

■ In the Ap­ple menu, se­lect Sys­tem Pref­er­ences

■ Click on Dis­plays ■ Click on the Night Shift tab, which will be on the far right

The Sched­ule pop-up menu is where you turn Night

Shift on or off. You have three op­tions:


Cus­tom: You can en­ter a time range when you want Night Shift to ac­ti­vate. The de­fault is 10pm to 7am. Sun­set to Sun­rise: Night Shift changes the colour tem­per­a­ture based on the time of sun­set and sun­rise in your area.

With the Off and Cus­tom set­tings, you have a man­ual op­tion that ac­ti­vates Night Shift im­me­di­ately. Check the box for Turn On Un­til To­mor­row and Night Shift switches to the warmer colour space, re­gard­less of the cur­rent time of day. It will switch back to the blue colour space af­ter 24 hours.

With the Sun­rise to Sun­set set­ting, there is also a man­ual op­tion that ac­ti­vates Night Shift im­me­di­ately, but this set­ting switches the colour space back at sun­rise.

Ad­just the colour tem­per­a­ture

Within the Off, Cus­tom and Sun­set to Sun­rise set­tings is a slider for colour tem­per­a­ture. You can set Night Shift to be Less or More Warm. When you slide to­wards Less Warm, more blue light is used. Slide to­wards More Warm and less blue light is used. You’ll see a pre­view of when your screen looks like as you slide.

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