<ul><li>On a Mac that has a top row of function keys, Apple includes volume and brightness controls that can be used to make adjustments in stepwise increments.</li><li>By holding down the Option and Shift keys, you can make more fine-grained and quarter-step changes to sound volume and screen brightness using a total of 64 increments.</li><li>This feature is useful for making more precise adjustments, especially for audio output levels.</li><li>The article was first published on MacRumors.com.</li></ul>

How to Adjust Mac Volume and Brightness More Precisely

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