If you are using an Apple-branded external display (like the Studio Display), you can often control its brightness by holding Control + F1/F2 .
On most Mac keyboards, brightness controls are on the and F2 keys (or F14 / F15 on older Macs).
If you are using an Apple-branded external display (like the Studio Display), you can often control its brightness by holding Control + F1/F2 .
On most Mac keyboards, brightness controls are on the and F2 keys (or F14 / F15 on older Macs). brightness shortcut mac