Nikon D3x Mode D'Emploi

74

N

Focus mode is controlled by the 
focus-mode selector on the front of 
the camera. There are two 
autofocus (AF) modes, in which the 
camera focuses automatically 
when the shutter-release button is 
pressed halfway, and one manual focus mode, in which focus must 
be adjusted manually using the focusing ring on the lens:

Choose single-servo AF for landscapes and other stationary sub-
jects.  Continuous-servo AF may be a better choice with erratically-
moving subjects.  Manual focus is recommended when the camera
is unable to focus using autofocus.

Single-servo 

AF

Camera focuses when shutter-release button is pressed 
halfway. Focus locks when in-focus indicator (

I) appears 

in viewfinder, and remains locked while shutter-release 
button is pressed halfway (focus lock).

 

At default settings, 

shutter can only be released when in-focus indicator is 
displayed (focus priority).

Continuous-

servo AF

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

 

If subject moves, camera will engage 

predictive focus tracking (pg. 75) to predict final distance to 
subject and adjust focus as necessary.

 

At default settings, 

shutter can be released whether or not subject is in focus 
(release priority).

Manual
(pg. 83)

Camera does not focus automatically; focus must be 
adjusted manually using the lens focusing ring.

 

If 

maximum aperture of lens is f/5.6 or faster, viewfinder 
focus indicator can be used to confirm focus (electronic 
range finding; pg. 84), but photographs can be taken at any 
time, whether or not subject is in focus.