Using the Zoom Tool

There are two ways to use the Zoom Tool. One, by clicking in the document window and, two, by clicking and then dragging to form a marquee around the image content that you would like to fill the window with. Clicking magnifies or diminishes the view by preset percentage amounts; it also centers the clicked image area in the window.

Clicking with the Zoom tool always magnifies unless you hold down Alt (Windows), Opt (Mac OS) at the same time, or select the Zoom Out icon on the options bar. By contrast, creating a marquee gives you more freedom to define the content that you would like to magnify or diminish.

By default, the document window does not change size when you zoom in and out. However, should you want to, you can make it do so by selecting Resize Windows To Fit from the options bar. If you use keyboard shortcuts to zoom in and out, the default behavior is the opposite: The window resizes to fit. If you prefer that the window did not resize, you can deselect Zoom Resizes Window in the General screen of the Preferences dialog box. To force the window to resize, add Alt (Windows), Opt (Mac OS) to the shortcut. So, holding down Ctrl+Alt+Plus (Windows), ^+Opt+Plus (Mac OS) zooms in and resizes the window to fit, whereas Ctrl+Alt+Minus (Windows), ^+Opt+Minus (Mac OS) zooms out and resizes the window to fit.

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