When working with images in Photoshop, I rely heavily on the Zoom tool. I’m constantly zooming in on tiny little spots, viewing sections of the image, checking things at 100%, or backing all the way out to fit the screen. Using the zoom button can be quite tedious and even impossible if I’m in the middle of using another tool. But have no fear there are better ways to zoom.
CTRL+”+”, CTRL+”-“, CTRL+0, CTRL+ALT+0
And for you Mac users, replace CTRL with COMMAND. These shortcuts are pretty handy sometimes because you can quickly zoom in, zoom out, fit to screen, or zoom to 100% without clicking on the Zoom button in the tools palette. As useful as these keyboard shortcuts are, there’s an even better solution.
That’s right, just hold the ALT key (OPT for Macs) and scroll that mouse wheel (do Macs have scroll wheels yet?). Scroll up to zoom in and scroll down to zoom out. Photoshop also zooms to the point that your cursor is at so you can avoid excessive panning after the zoom. The same trick works in Adobe Reader, but with the CTRL button instead of ALT.