To zoom with keyboard shortcuts, select 'Use keyboard shortcuts to zoom.'.Enable either of the following options:.Select Apple menu > System Preferences, click to open the Accessibility panel, and then click Zoom in the panel on the left.Follow the steps below to enable the Zoom function and use it while your work of play on your Mac. It's extremely useful if you want to examine a photo or some other visual element without opening a dedicated photo editing app.
One such example is a handy zoom setting allows you to magnify a part of your screen using only keyboard shortcuts and your trackpad. In many cases, these features often extend beyond their intended assistive function and are useful to anyone using OS X. OS X ships with a variety of accessibility options designed to help those with sight and hearing loss use a Mac more effectively.