Nikon D300s manual Focus Mode, Option Description

Focus-mode selector

Focus Mode

Focus mode is controlled by the

focus-mode selector on the front of

the camera. There are two autofocus (AF) modes, in which the

camera focuses automatically

when the shutter-release button is pressed halfway, and one manual

focus mode, in which focus must be adjusted manually using the focusing ring on the lens:

	Option	Description
		Camera focuses when shutter-release button is pressed
	S	halfway. Focus locks when in-focus indicator (I) appears
		in viewfinder, and remains locked while shutter-release
N	Single-servo
		button is pressed halfway (focus lock). At default settings,
	AF	shutter can only be released when in-focus indicator is
		displayed (focus priority).
		Camera focuses continuously while shutter-release button
	C	is pressed halfway. If subject moves, camera will engage
		predictive focus tracking (0 75) to predict final distance to
	Continuous-
		subject and adjust focus as necessary. At default settings,
	servo AF	shutter can be released whether or not subject is in focus
		(release priority).
		Camera does not focus automatically; focus must be
	M	adjusted manually using the lens focusing ring. If
		maximum aperture of lens is f/5.6 or faster, viewfinder
	Manual
		focus indicator can be used to confirm focus (electronic
	(0 83)
		range finding; 0 84), but photographs can be taken at any
		time, whether or not subject is in focus.

Choose single-servo AF for landscapes and other stationary subjects. Continuous-servo AF may be a better choice with erratically-moving subjects. Manual focus is recommended when the camera is unable to focus using autofocus.

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