If you want to zoom in or out of a photo in Photoshop, there are a few different ways to do it. Here’s how to do it each way. Zoom In To zoom in, first select the photo you want to zoom in on. Then use the keyboard shortcut Command (Mac) or Ctrl (Windows) + (plus sign) keys to enlarge the photo. To restore the original size, use the keyboard shortcut Command (Mac) or Ctrl (Windows) - (minus sign). Zoom Out To zoom out, first select the photo you want to zoom out on. Then use the keyboard shortcut Command (Mac) or Ctrl (Windows) - keys to reduce the photo size. To restore the original size, use the keyboard shortcut Command (Mac) or Ctrl (Windows) + keys. ..