f: Selecting the AF OperationN118This AF operation is suited for moving subjects when the focusingdistance keeps changing. While you hold down the shutter buttonhalfway, the camera will keep focusing on the subject continuously. The exposure is set at the moment the picture is taken. When the AF area selection mode (p.120) is set to 45-pointautomatic selection AF, focus tracking will continue as long as theArea AF frame covers the subject.AI Focus AF switches the AF operation from One-Shot AF to AIServo AF automatically if a still subject starts moving. After the subject is focused in One-Shot AF, if the subject startsmoving, the camera will detect the movement, change the AFoperation automatically to AI Servo AF, and start tracking the movingsubject.AI Servo AF for Moving SubjectsAI Focus AF for Switching the AF Operation AutomaticallyWith AI Servo AF, the beeper will not sound even when focus is achieved.Also, the focus indicator <o> in the viewfinder will not light up.When focus is achieved with AI Focus AF with the Servo operation active,the beeper will continue beeping softly. However, the focus indicator <o> inthe viewfinder will not light up. Note that focus will not be locked in this case.
