52
Ref
er
enc
e
—
F
ocus
The AF-ON Button
For the purpose of focusing the camera, pressing the
AF-
ON
button has the same eff ect as pressing the shutter-re-
lease button halfway.
Predictive Focus Tracking
In continuous-servo AF, the camera will au to mat i cal ly ini tiate pre dic tive focus track ing if
the subject moves while the shutter-release button is pressed halfway or the
AF-ON
but-
ton is pressed. In predictive focus tracking, the camera will track focus while at tempt ing
to predict where the subject will be when the shutter is re leased.
a1—AF-C Mode Priority (
148)
If
Focus
is selected for Custom Setting a1 (
AF-C Mode Priority
), photographs can be
taken in continuous servo-AF only when the camera is in focus. Note that regardless of the
setting selected, focus will not lock when the in-focus indicator is displayed.
a2—AF-S Mode Priority (
148)
If
Release
is selected for Custom Setting a2 (
AF-S Mode Priority
), photographs can be
taken in single servo-AF even when the camera is not in focus. Note that regardless of the
setting selected, focus will lock when the in-focus indicator is displayed.
a5—Lock-On (
150)
This option controls whether the camera immediately adjusts focus to track a subject when
the distance to the subject changes drastically.
a6—AF Activation (
151)
If
AF-ON Only
is selected for Custom Setting a6 (
AF Activation
), the camera will only
focus when the
AF-ON
button is pressed, not when the shutter-release button is pressed
halfway.
