Nikon D3body - D3 Body 12mp FX Digital SLR Camera Technical Manual page 8

Autofocus
3
Choose an option for Custom Setting a1.
Choose whether the camera gives
priority to focus or to shutter re-
sponse in focus mode C.
4
Choose an option for Custom Setting a3.
Choose the number of focus
points used for dynamic-area AF.
Select 9 points or 21 points for
track-and-fi eld events or for sub-
jects that move unpredictably.
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