While transforming an image (Edit > Free Transform) you can change zoom level of the image using the old standby - Command (Mac) / Control (Win) “+” (plus) to zoom in, Command (Mac) / Control (Win) “-” (minus) to zoom out. Or, you can quickly zoom to a specific point using via the Navigator panel.

Posted by Julieanne Kost at 10:48 PM | Permalink

To change the zoom percentage in the Navigator panel, enter a percentage, drag the slider, click on the Zoom In or Zoom Out icons (the small or large mountains), or Command (Mac) / Control (Win) -drag in the thumbnail a new rectangle the size over the area that you want to zoom into.

Posted by Julieanne Kost at 10:47 PM | Permalink