Use the brightness function keys If the screen seems too light or too dark, you can adjust your displays brightness.
![]() Why Does My Brightness On My Adjust Randomly Mac Has AnAutomatically adjust brightness If your Mac has an ambient light sensor, choose Apple menu System Preferences, click Displays, then click Display.
Open the Display pane for me Select Automatically adjust brightness. If you dont see the Automatically adjust brightness checkbox, you can manually adjust the brightness. Manually adjust brightness On your Mac, choose Apple menu System Preferences, click Displays, then click Display. Open the Display pane for me Drag the Brightness slider to adjust the brightness of your display. Depending on the type of display connected to your Mac, you may also see a Contrast slider that you can use to adjust the displays contrast. Set brightness from the menu bar On some newer portable computers, you can help optimize battery use by setting the display brightness to approximately 75. You see this option in the menu bar only when the displays brightness is set to a level that uses a significant amount of energy. On your Mac, click the battery icon in the menu bar, then click Display Brightness. Note: If you dont see the battery icon in the menu bar, you need to show the batterys status. You cant adjust the brightness of some older Apple displays. In OS X 10.10 and later, the Brightness slider may no longer appear in the Display pane of Displays preferences. For specific information about the brightness of your display, check the documentation that came with your display. Why Does My Brightness On My Adjust Randomly Full Brightness SetSee also If your Mac display is slow to reach full brightness Set Accessibility preferences on Mac Use the Touch Bar on Mac.
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