The AF mode is the autofocusing operation method. Three AF modes are provided. One-Shot AF is suited for still subjects, while AI Servo AF is for moving subjects. And AI Focus AF switches from One-Shot AF to AI Servo AF automatically if the still subject starts moving. In the Basic Zone modes, the optimum AF mode is set automatically.

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-	1. Set the lens focus mode switch to <AF>.
	2. Press the < AF> button. The [AF mode] menu will appear.
	3. Select the AF mode. Press the <> key to select the desired setting, then press <>. ONE SHOT: One-Shot AF AI FOCUS: AI Focus AF AI SERVO: AI Servo AF When you press the shutter button halfway, the LCD panel will display an arrow <> next to the current AF mode.
Although you can still set the AF mode while the lens focus mode switch is set to <MF>, the AF mode will not take effect during manual focus. If an Extender (optional) is attached and the maximum aperture of the lens is f/5.6 or smaller, AF will not be possible. For details, see the Extender' s instructions.
<AF> stands for Auto Focus, and <MF> is Manual Focus.