Nikon D300 User Manual (en)

Download
270
U
A
3D-tracking
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 the 
same color as the background or that occupy a very small area of the 
frame.
a4: Focus Tracking with Lock-On
This option controls how autofocus adjusts to sudden large 
changes in the distance to the subject.
f
51 points 
(3D-tracking)
If the subject leaves the selected focus point, the 
camera will use 3D-tracking to track the subject 
and select a new focus point as required. Use to 
quickly compose pictures with subjects that are 
moving erratically from side to side (e.g., tennis 
players). If the subject leaves the viewfinder, 
remove your finger from the shutter-release 
button and recompose the photograph with the 
subject in the selected focus point.
Option
Description
Long
When the distance to the subject changes abruptly, the 
camera waits for the specified period (long, normal, or 
short) before adjusting the distance to the subject. This 
prevents the camera from refocusing when the subject is 
briefly obscured by objects passing through the frame.
D
Normal 
(default)
Short
Off
The camera immediately adjusts focus when the distance 
to the subject changes. Use when photographing a 
series of subjects at varying distances in quick succession.
Option
Description