Nikon D3body D3 User's Manual - Page 102

AF-Area Mode AF-area mode determines how the AF-area mode selector focus point is selected in autofocus mode (pg. 74). To select the AFarea mode, rotate the AF-area mode selector. The following options are available: N 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. • In continuous-servo AF (pg. 74), 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 I be selected from 9, 21, and 51 using Custom Setting a3 Dynamic- ([Dynamic AF area], pg. 306). If [51 points (3D-tracking)] area AF is selected for Custom Setting a3, focus point will be selected automatically using 3D-tracking. • In single-servo AF (pg. 74), user selects focus point manually; camera focuses on subject in selected focus point only. Camera automatically detects subject and selects focus point. If type G or D lens is used, camera can distinguish human subjects H from background for improved Auto-area AF 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. 76