Nikon D3000 ユーザーズマニュアル

42

z

Highlight one of the following options and press 
J. Note that AF-S and AF-C are available only in 
modes P, S, A, and M.

Camera automatically selects single-servo autofocus if subject is 
stationary, continuous-servo autofocus if subject is moving.

For stationary subjects. Focus locks when shutter-release button 
is pressed halfway.

For moving subjects. Camera focuses continuously while shutter-
release button is pressed halfway. 

Manual focus Focus manually (

0 48).

D

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.

A

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 48) or use focus lock 

(

0 46) to focus on another subject at the same distance and then recompose the 

photograph.

There is little or no contrast 
between the subject and the 
background.

: Subject is the same 

color as the background. 

The focus point contains 
areas of sharply contrasting 
brightness.

: Subject is half in the 

shade. 

The focus point contains 
objects at different distances 
from the camera.

: Subject is inside a 

cage. 

: a building is in the 

frame behind the subject.

The subject is dominated by 
regular geometric patterns.

: A row of windows 

in a skyscraper.

The subject contains many 
fine details.

: A field of flowers or 

other subjects that are 
small or lack variation in 
brightness.