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Other Zooming Techniques
You should know a few other ways to zoom in and out. These shortcuts can help you work more efficiently:Press Ctrl+plus (+)/z +plus (+) to zoom in.
Press Ctrl+minus (-)/z +minus (-) to zoom out.
Type an exact magnification percentage or ratio in the Magnification box at the lower-left corner of the image window (see Figure 5-2), and then press Enter/Return. 100% magnification is the actual pixel size of the image. The same magnification using a ratio is 1:1; 200% magnification is expressed as the ratio 2:1; 50% magnification is expressed as 1:2, and so on.
Figure 5-2: Zoom in or out by typing a percentage or ratio in the Magnification box, and then pressing Return/Enter.
Zoom in or out with the Zoom tool by clicking the image window (be sure to select either the Zoom In or Zoom Out button on the Options bar), or by dragging a marquee to change the magnification.
If you hold down the Ctrl/z key and the spacebar at the same time, the mouse cursor temporarily changes to the Zoom In tool. After you finish zooming, release the keys to return to the previous tool.
If you hold down the Alt/Option key and the spacebar at the same time, the mouse cursor temporarily changes to the Zoom Out tool. After you’re done changing the view size, release the keys to return to the previous tool.
