Nikon D3300 - Manual (Page 95)

75 More on Photography
1
Display focus mode
options.
Press the
P button, then
highlight the current focus
mode in the information
display and press
J.
2
Choose a focus mode.
Highlight a focus mode and
press
J.
A Predictive Focus Tracking
In AF-C mode or when continuous-servo autofocus is selected in AF-A
mode, the camera will initiate predictive focus tracking if the subject
moves toward the camera while the shutter-release button is pressed
halfway. This allows the camera to track focus while attempting to
predict where the subject will be when the shutter is released.
D
Continuous-Servo Autofocus
In AF-C mode or when continuous-servo autofocus is selected in AF-A
mode, the camera gives higher priority to focus response (has a wider
focus range) than in AF-S mode, and the shutter may be released before
the in-focus indicator is displayed.
P button