Nikon D3 - Manual (Page 7)

7
The a Autofocus group in the fi rst level of the Custom
Settings menu contains a variety of advanced autofocus
options. This chapter details options that can be used to
frame moving subjects at sporting events: a1 (AF-C priority
selection), a3 (Dynamic AF area), and a4 (Focus tracking
with lock-on). These options are best used with the focus
mode selector rotated to C (continuous-servo AF) and the
AF-area mode selector rotated to
I (dynamic-area AF).
1
Select continuous-servo AF.
Rotate the focus-mode
selector to C. The camera
will continually adjust
focus while the shutter-
release button is pressed
halfway.
2
Select dynamic-area AF.
Rotate the AF-area mode
selector to
I (dynamic-
area AF). If the subject
briefl
y leaves the se-
lected focus point, the
camera will focus based
on information from sur-
rounding focus points.
Autofocus: Focusing with Autofocus