Magnifying an Image
Sometimes you'll need to magnify the image in the Footage, Layer, or Composition panel—the panel's viewer—so that you can examine details closely. At other times, you'll want to reduce magnification because viewing the image at 100% takes up too much screen space. After Effects lets you change the magnification ratio as needed. Keep in mind that this option is for viewing purposes only—the actual scale of the footage doesn't change. You may be surprised to discover that no matter how much you magnify a viewer's image, no scrollbars appear. To see different parts of a magnified image, use the Hand tool.
To change the magnification of a viewer in the Footage, Composition, or Layer panel, click open the Magnification Ratio pop-up menu and choose the desired magnification (see Figure 9). When you release the mouse button, the Footage panel uses the magnification ratio you selected (see Figure 10).
Figure 9 You can choose a magnification from the Magnification Ratio pop-up menu.
Figure 10 The Footage panel displays the image at the magnification you specified.
To change the visible area of a magnified image in a viewer, click the Hand tool (see Figure 11). The mouse pointer changes to display the hand icon. Drag the hand to change the visible area of the image.
Figure 11 Use the Hand tool to reposition the image.