Canon EOS 1D Mark II N Instruction Manual page 168

3 Custom Function Settings
C.Fn-18
0: P+S
1: P
P
Press the <
2: Only while pressing P
Switch to the registered AF point only while you press the <
release the button, the AF point selected previously becomes active again. You can
thereby easily switch between the selected AF point and registered AF point.
If C.Fn-04-1/3 is also set, you can press the <
registered AF point and start the AF at the same time.
C.Fn-19
0: AF stop
1: AF start
AF operates only while the AF stop button is pressed. While the button is
pressed, AF operation with the camera is disabled.
2: AE lock while metering
When the button is pressed while metering is still active, AE lock takes
effect. Convenient when you want to focus and meter separately.
3: AF point: M 9 Auto/Auto 9 Ctr.
In the manual AF point selection mode, the button instantly switches to
automatic AF point selection (among 45 AF points) from manual 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: AF mode: 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. 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 only while
you press the button.
The AF stop button is provided only on IS super telephoto lenses.
168
Switch to registered AF point
> button to switch to the registered AF point.
Lens AF stop button function
P
> button. When you
P
> button to switch to the