Nikon D3s Technical Manual page 9

3
Choose an option for Custom Setting a1.
Choose whether the cam-
era gives priority to focus or
to shutter response 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 subjects that
move unpredictably.
5
Choose an option for Custom Setting a4.
Choose how quickly the cam-
era responds when an object
moves between the subject
and the camera.
5