FOCUSING METHODS AND HOW TO USE THEM
Autofocus revolutionized flight shots less than two decades ago.
Before autofocus, focusing was done manually, and you relied on your eyesight. Trying to take sharp images of flying birds was very hard, especially when they flew close. Now you see one great action shot after another, and most of them were taken with continuous AF.
Bird images are primarily taken with autofocus. You typically use continuous focusing when photographing moving subjects and one-shot focus for subjects that are still. You occasionally need to use manual focus, which we’ll talk about more at the end of this chapter.
When you use continuous focusing, you try to keep a chosen AF point, or points, locked on your subject, ...
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