f: Changing the Autofocus OperationN 
In the <a>, <f>, <s>, and <d> shooting modes, you can select the AF (Autofocus) operation to suit the shooting condition or subject. In Basic Zone modes, the optimum AF operation is set for the respective shooting mode.
1Use the menu or focus mode switch to set the focus to <AF>.
2On the Quick Control screen, tap the AF operation button.
3
4
Tap the AF operation.
Focus the subject.
Aim the AF point over the subject and press the shutter button halfway. The camera will then autofocus with the selected AF operation.
If focus cannot be achieved, the AF point will turn orange. If this occurs, the picture cannot be taken even if the shutter button is pressed completely. Recompose the picture and try to focus again. Or see “Shooting conditions that make focusing difficult” (p.123).
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