Nikon manual 100

Autofocus mode can be selected by pressing the AF- mode button and rotating the main command dial until the desired setting is displayed in the viewfinder or control panel.

AF-mode button Main command dial

AF-A AF-S AF-C

AGetting Good Results with Autofocus

N	Autofocus does not perform well under the conditions listed below. The shutter release may
	be disabled if the camera is unable to focus under these conditions, or the in-focus indicator
	(I) may be displayed and the camera may sound a beep, allowing the shutter to be released
	even when the subject is not in focus. In these cases, focus manually (0 78) or use focus lock
	(0 76) to focus on another subject at the same distance and then recompose the
	photograph.
	There is little or no contrast	The focus point contains
	between the subject and the	areas of sharply contrasting
	background.	brightness.
	Example: Subject is the same	Example: Subject is half in
	color as the background.	the shade.
	The focus point contains	Background objects appear
	objects at different distances
		larger than the subject.
	from the camera.
	Example: Subject is inside a	Example: A building is in the
		frame behind the subject.
	cage.
		The subject contains many
	The subject is dominated by	fine details.
	regular geometric patterns.	Example: A field of flowers or
	Example: Blinds or a row of	other subjects that are
	windows in a skyscraper.	small or lack variation in
		brightness.

ASee Also

For information on using focus priority in continuous-servo AF, see Custom Setting a1 (AF-C priority selection, 0 231). For information on using release priority in single-servo AF, see Custom Setting a2 (AF-S priority selection, 0 231). See page 155 for information on the

autofocus options available in live view or during movie recording.

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