Home » Tip of The Day » Temporarily Select The Zoom ToolTemporarily Select The Zoom Tool January 15, 2017. Posted in: Tip Of The Day. Press the Spacebar Ctrl (Mac: Spacebar Command) to temporarily select the Zoom tool. Click to zoom in. To zoom out, hold the Alt (Mac: Option) key and click. Release the keys to return to the tool that you were previously using. « Previous Photoshop Tip: | Next Photoshop Tip: » Sign-up for the PTC Newsletter so that you'll never miss a tutorial!. Your Email Address: