Nikon D700 AF-Area Mode, Following options are available, AF-area mode selector, Mode Description

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:

		AF-area mode selector
N	Mode	Description
	K	User selects focus point manually; camera focuses on
		subject in selected focus point only. Use for relatively static
	Single-
		compositions with subjects that will stay in selected focus
	point AF
		point.

•In continuous-servo AF (pg 72), user selects focus point manually; if subject briefly leaves selected focus point,

	camera will focus based on information from surrounding
I	points. Number of focus points used can be selected from
	9, 21, and 51 using Custom Setting a3 (Dynamic AF area,
Dynamic-
	pg. 285). If 51 points (3D-tracking)is selected for
area AF
	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.

	Camera automatically detects
	subject and selects focus point. If
	type G or D lens is used (pg. 370),
H	camera can distinguish human
	subjects from background for
Auto-area
	improved subject detection. In
AF	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.

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