If you??™re
photographing a subject with a slow shutter speed, your subject must remain
perfectly still; otherwise, the image will be blurred. When you shoot at a high
shutter speed, such as 1/2000 of a second, you freeze action, as shown in
Figure 2-10. To avoid blurry images when you??™re using a high-end digital
camera with a zoom lens, you??™ll need to shoot with a faster shutter speed when
you zoom in tightly on a subject. When in doubt, a tripod will always ensure
that the camera remains steady while you??™re taking the picture.
If your camera features image stabilization, be sure to enable the feature when
taking photos that must be sharp. With image stabilization, you can shoot a
couple of f-stops lower than you normally would. Remember, the general rule
of thumb is that the slowest shutter speed you can use for the 35-mm equivalent
of the focal length with which you??™re shooting is to use the reciprocal of the
focal length. To find out how many stops lower you can shoot, enable image
stabilization, and take several photographs of the same subject using slower
shutter speeds than normal. Download the images to your computer, and
compare them at 100 percent magnification. Examine the edges of objects in
the scene for sharpness.
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