Canon EOS-1D Mark IV - Manual (Page 224)

Custom Function Settings
C.Fn III -11 Switch to registered AF point
You can instantly switch to the registered AF point with <>:•?> or the <K->
button while the metering timer is active. The AF will operate when the
switch is made.
0; Disable
1; Switch with < ijJ>
By pressing you can switch to the registered AF point. Press it
again to switch to the previous AF point.
2; Only while <-X-> is pressed
You can switch to the registered AF point only while you hold down the
<*> button. When you release the <-X-> button, the camera will return
to the original AF point.
Registering the AF point
You can register an AF point you use frequently.
1. Select the AF point to be registered, (p.97)
2. While holding down the <I33> button, press the <lSO> button.
• [II] HP: Automatic selection, SEL [ ]: Center AF point,
SEL HP : Off-center AF point
If you change the C.Fn III -10 setting, the registered AF point will be
canceled. The camera will switch to the center AF point.
You cannot register multiple AF points.
AF point auto selection
For AF point selection, you can enable or disable automatic selection.
The setting before the slash (/) applies to the <0> dial’s function while the
metering timer is active with C.Fn IV -3-1/3 set. And the setting after the
slash applies to the dial’s function when the <EB> button is pressed.
0: Odirect:disable/iicii;:enable
When metering is active, the <0> dial cannot select automatic
selection. You can select automatic selection with
1: Odirect:disable/£It::disable
Automatic selection cannot be selected.
2; Gdirect:enable//S:enable
When metering is active, the <0> dial can select automatic selection.
You can select automatic selection with <^>.
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