DSLR AUTO FOCUS

SOURCE

AF-Area Mode	Nikon Focus Modes
	AF-S Mode	AF-C Mode	AF-A Mode
Note: Not all of the above focus modes may be available on your Nikon DSLR. The new AF-F and other AF-Area video modes are not included in the above chart.
Single-Point AF-Area Mode	Camera acquires focus only once and on the selected single focus point only.	Camera focuses on the selected single focus point only and will reacquire focus if the subject moves.	Camera detects if subject is stationary or moving and will automatically select whether to use AF-S or AF-C. Only one focus point is used in either case.
Dynamic AF-Area Mode	Disabled, works just like Single-Point AF	You choose an initial focus point and once the camera acquires focus on the subject, it will engage the surrounding focus points to track subject movement. The number of surrounding focus points to use can be selected in camera menu.	Camera detects if subject is stationary or moving and will automatically select whether to use AF-S or AF-C.
Dynamic AF-Area with 3D-Tracking	Disabled, works just like Single-Point AF	Instead of using a particular number of surrounding focus points, the 3D-Tracking activates all available focus points and uses color recognition to track subjects. You pick the initial focus point and the camera will track the subject across the frame automatically, letting you recompose the shot without losing focus on the subject.	Camera detects if subject is stationary or moving and will automatically select whether to use AF-S or AF-C.
Auto-Area AF Mode	Camera automatically picks a focus point, depending on what’s in the frame.	Camera automatically picks a focus point on a moving subject and will track the subject in the frame.	Camera detects if subject is stationary or moving and will automatically select whether to use AF-S or AF-C.