3Custom Function SettingsN

C.Fn III: Autofocus

C.Fn-4 AF-assist beam (LED) firing

You can enable or disable the AF-assist beam.

0:Enable

When necessary, the self-timer/AF-assist beam will emit the AF-assist beam. This setting is applicable also for LED-compatible external flashes.

1:Disable

The AF-assist beam is not emitted.

C.Fn IV: Operation/Others

C.Fn-5 Shutter/AE lock button

0:AF/AE lock

1:AE lock/AF

This is convenient when you want to focus and meter separately. Press the <YA> button to autofocus, and press the shutter button halfway to apply AE lock.

2:AF/AF lock, no AE lock

In the Servo AF operation, you can press the <YA> button to stop the AF operation momentarily. This prevents the AF from being thrown off by any obstacle passing between the camera and subject. The exposure is set at the moment the picture is taken.

3:AE/AF, no AE lock

This is useful for subjects which keep moving and stopping repeatedly. With Servo AF, pressing the <YA> button starts or stops the Servo AF. The exposure is set at the moment the picture is taken. Thus, the optimum focusing and exposure will always be achieved as you wait for the decisive moment.

During continuous shooting, even if you press the <YA> button, the AF operation will not start or stop.

During continuous shooting without autofocus, using the [1: AE lock/AF]

or [3: AE/AF, no AE lock] setting, the maximum number of frames per second depends on the AF operation settings and the lens used (p.134).

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