Nikon D300 - Manual (Page 90)

64
N
AF-Area Mode
AF-area mode determines how the
focus point is selected in autofocus
mode. To select the AF-area mode,
rotate the AF-area mode selector.
The following options are available:
Mode Description
K
Single-
point AF
User selects focus point manually; camera focuses on
subject in selected focus point only.
Use for relatively static
compositions with subjects that will stay in selected focus
point.
I
Dynamic-
area AF
• In continuous-servo AF (pg 62), user selects focus point
manually; if subject briefly leaves selected focus point,
camera will focus based on information from surrounding
points. Number of focus points used can be selected from
9, 21, and 51 using Custom Setting a3 ([Dynamic AF area],
pg. 269). If [51 points (3D-tracking)] is selected for Custom
Setting a3, focus point will be selected automatically
using 3D-tracking.
• In single-servo AF, user selects focus point manually; camera
focuses on subject in selected focus point only.
H
Auto-area
AF
Camera automatically detects
subject and selects focus point.
If
type G or D lens is used, camera can
distinguish human subjects from
background for improved subject
detection. In single-servo AF, active
focus points are highlighted for
about one second after camera focuses. Active focus points
are not displayed in continuous-servo AF.
AF-area mode selector