3.3. Focus Modes in Detail
The Focus Modes allow you to control how the autofocus works with static and moving subjects. They allow your camera to "lock" focus on a subject that is not moving, or moving very slowly. They also allow your camera to "follow" focus on an actively moving subject. Let's consider the two servo-based Focus Modes to see when and how you might use them best.
Single-servo AF Mode (S)
Subject is not moving: When you press the shutter release button half way down, the AF Module quickly locks the focus on your subject, and waits for you to fire the shutter. If you don't release shutter button pressure and refocus when your subject starts moving, the focus will be out of date and useless. Once you have focus lock, take the ...
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