CHAPTER 3: Understand Exposure 67
You can??™t see the effect of aperture on depth of field in the optical viewfinder, but the
LCD display can show you the depth of field. To see it, press the shutter release halfway
down. That locks in the focus and triggers the aperture to close to the proper position
for the impending picture. It??™s now??”with the shutter halfway depressed??”that you can
see the depth of field in your picture. Even so, depth of field can be a hard thing to see,
especially on an LCD display in bright daylight.
Action Photography
Action photography is often considered the most exciting kind of photography, but it??™s also the
most demanding for both your technique and your equipment. As in all kinds of photography,
you can no doubt take some great pictures with anything from a wide-angle lens all the way
up to the photographic equivalent of the Hubble telescope. And wide-angle lenses do, in fact,
have a role in action photography. But the essence of many action shots is a highly magnified
immediacy??”something you can only get with the telephoto lens.
The shutter priority setting on your digital camera was born for action photography. To freeze
action, you??™ll need to use a fairly fast shutter speed. Luckily, this higher shutter speed works to
FIGURE 3-11 Portraits tend to work best with a moderate telephoto magnification and low
f/numbers.
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