3Custom Function SettingsN

C.Fn III -2 Lens AF stop button function

0:AF stop

1:AF start

AF operates only while the button is pressed. While the button is pressed, AF operation with the camera is disabled.

2:AE lock

When the button is pressed, AE lock is applied. Convenient when you want to focus and meter at different parts of the picture.

3:AF point: M 9 Auto/Auto 9 center

In the manual AF point selection mode, the button instantly switches to automatic AF point selection only while you hold it down. Convenient when you are no longer able to focus track a moving subject with a manually-selected AF point in the AI Servo AF mode.

In the automatic AF point selection mode, the button selects the center AF point only while you hold it down.

4:ONE SHOT z AI SERVO

In the One-Shot AF mode, the camera switches to AI Servo AF mode only while you hold down the button. And in the AI Servo AF mode, the camera switches to One-Shot AF mode only while you hold down the button.

Convenient when you need to keep switching between One-Shot AF and AI Servo AF for a subject which keeps moving and stopping.

5:IS start

With the lens’ IS switch already <ON>, the Image Stabilizer operates when you press the button.

The AF stop button is provided only on super telephoto IS lenses. With setting 5, the Image Stabilizer will not operate when you press the shutter button halfway.

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