Nikon D3100 Reference Manual page 54

2
Choose a focus mode.
Press the P button and use the multi
selector to highlight the current focus mode
in the monitor. Press J to display the
following options. Highlight an option and
press J.
AF-S Single-servo AF
AF-F Full-time servo AF
x
MF Manual focus
The description in Steps 3, 4, and 5 assumes that AF-S or AF-F is selected. If MF is
selected, proceed to Step 6 after focusing manually.
3
Choose an AF-area mode.
AF-area mode can be selected in all shooting
modes except i and j. Highlight the
current AF-area mode in the monitor. Press
J to display the following options.
Highlight an option and press J.
8 Face-priority AF
9 Wide-area AF
! Normal-area AF
" Subject-tracking AF Track a selected subject as it moves through the frame.
Press the P button again to return to live view.
A
Live View AF-Area Mode
The AF-area modes for live view can also be
chosen using the AF-area mode > Live view/
movie option in the shooting menu.
38
Option
For stationary subjects. Focus locks when shutter-release
button is pressed halfway. Shutter can only be released if
camera is able to focus.
For moving subjects. Camera focuses continuously during
live view and movie recording. Shutter can only be released
if camera is able to focus.
Focus manually (0 43).
Mode
The camera automatically detects and focuses on portrait
subjects facing the camera. Use for portraits.
Use for hand-held shots of landscapes and other non-portrait
subjects. Use the multi selector to select the focus point.
Use for pin-point focus on a selected spot in the frame. A
tripod is recommended.
P button
Description
Description