|Tip 401||Magnify Sections of Photos or PDFs Easily|
When viewing photos or PDFs in Preview, you might use the magnify buttons on the toolbar to get a better view of details. But try this instead: hit the backtick key (left of the top number row on most keyboards, but sometimes left of the Z key), and a magnifying glass will appear. If you have a multitouch trackpad, you can use the pinch-and-expand gesture to make the glass zoom in and out. Everybody else can tap the plus and minus keys (hold Command at the same time to also zoom the image/document). To get rid of the glass, just hit the backtick key again or hit Esc.