Nikon D3000 User Manual page 40

3
Choose a focus mode.
Highlight one of the following options and press
@.
Note that AF-S and AF-( are available only in
~
modes P, S, A, and M.
®
Option
r.;;;' "
Desaiption .
-A-F.-A-A-u-to---s-e-rvo-ica-meraautomaticaTiy-sefec!ssingle-:servoautofocus if subject is-
AF
I
stationary, continuous-servo autofocus if subject is moving.
-;;,5
Single-servo
I
~or
stationary subjects. Focus locks when-shutter-release button
____~_~_.___II~p~~~~~_~~~I~~X~------_--_--------------_______
__
AF-C Continuous-
!
For moving subjects. Camera focuses continuously while shutter-
-M~:~:~;~~1~;fr~~~;~1~;:~~~~~
. .
~ ~~~~s~~
~
Continuous-servo Autofocus
In AF-C mode or when continuous-servo autofocus is selected in AF-A mode, the camera gives
priority to shutter response and the shutter may be released before the in-focus indicator is
displayed.
II
Getting Good Results with Autofocus
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
(e) 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 or use focus lock to
focus on another subject at the same distance and then recompose the photograph.
,--------::--z"""'"
There is little or no contrast
between the subject and the
background.
Example: Subject is the same
'--'--'-_-----l.l..U-_-'
color as the background.
--·---·-·-----··--··---rhelocusiJofni'contafns-······. . . . , . . . . .
objects at different distances
from the camera.
, Example: Subject is inside a
LLdL=..L--".-lL.L..-"""-"""'--"liJ
cage.
..."---,,..---,--,-, The focus point contains
areas of sharply contrasting
brightness.
Example: Subject is halfin the
=---'---~~--'---' shade.
Background objects appear
't!;
,it'
larger than the subject.
.
~."
t
Example: a building is in the
frame behind the subject.
'----"-'~--'-'
34
The subject is dominated by
regular geometric patterns.
Example: A row of windows
in a skyscraper.
The subject contains many
fine details.
Example: A field of flowers or
other subjects that are
small or lack variation in
brightness.