To modify, edit, and create images you will need to increase and decrease magnification for accuracy.

The Status Bar 

(Figure 3.5)

You can use the drop down menu on the status bar to zoom in or out of your document. This is probably the quickest way for you to magnify your image, however, you don’t have much control over what it is that you zoom in on.

The Zoom Tool 

Alternately you can use the Zoom Tool on the actual image to adjust magnification. {Click} on the Zoom Tool to select it. {Click} and drag over the area you desire to magnify. Pressing the "ALT" key changes the Zoom Tool to a Zoom Out Tool.  Notice the "+" sign that appears in the center of the magnifying glass icon by default.  Pressing the "ALT" key changes the "+" sign to a "-" sign. {Click} on the image to Zoom Out to predetermined levels. {Double-Clicking} the Zoom Tool restores magnification to 100%.

The Hand Tool 

The Hand Tool is useful for navigating around an image that has been magnified to a size larger than your Document Window can display. If you’ve magnified a part an image, you can select the Hand Tool and {Click}and drag over the image to move the image within the Window, effectively moving other parts of the image under the virtual magnifying glass.