Suppose you??™re trying to take a silhouette, for instance (something I??™ll talk about in
more detail in Chapter 5). You need to make sure the subject is sufficiently underexposed
that it appears totally dark, with no detail. How can you do that? There are two common
methods for bracketing:
?– Use your camera??™s auto-bracketing feature Many digital cameras have
something called auto-bracketing??”turn it on, and it??™ll take three pictures in quick
succession when you press the shutter release. One will be the ???proper??? exposure,
but it??™ll also capture slightly over- and underexposed images for insurance.
?– Use exposure compensation Take one picture normally, and then take additional
photos after changing the EV dial to under- and overexpose. You should start with
exposure variations of a half-stop or full-stop (1/2 or 1 on the display), since more
than a full stop of exposure compensation can be dramatic.
CHAPTER 3: Understand Exposure 63
When to Take Control
As I mentioned at the outset, you may often be perfectly satisfied with the results you can get
from the automatic exposure controls in your camera. But there will be times when you can do
better on your own. Keep your eyes peeled for situations like those described next.
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