Nikon D200 用户手册
52
Ref
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F
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.
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.
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.
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.
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.
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.
focus when the AF-ON button is pressed, not when the shutter-release button is pressed
halfway.