Nikon D3400 Triple Lens Parent's Kit Owner's Manual

74 More on Photography

Choose how the focus point for autofocus is selected. The 
following options are available during viewfinder photography:

Note that 

d (Dynamic-area AF) and f (3D-tracking (11 

points)) AF-area modes are not available when AF-S is selected 
for focus mode.

c

For stationary subjects. Focus point is selected 
manually; camera focuses on subject in selected 
focus point only.

d

For non-stationary subjects. In AF-A and AF-C focus 
modes

, user selects focus point using multi 

selector (

0 76), but camera will focus based on 

information from surrounding focus points if 
subject briefly leaves selected point. 

f

, user selects focus point 

using multi selector (

0 76). If subject moves 

after camera has focused, camera uses 3D-
tracking to select new focus point and keep 
focus locked on original subject while shutter-
release button is pressed halfway.

e Auto-area AF

Camera automatically detects subject and 
selects focus point.

A

If subject leaves the viewfinder, remove your finger from the shutter-
release button and recompose the photograph with the subject in the 
selected focus point. Note that when the shutter-release button is 
pressed halfway, the colors in the area surrounding the focus point are 
stored in the camera. Consequently 3D-tracking may not produce the 
desired results with subjects that are similar in color to the background 
or that occupy a very small area of the frame.