Nikon D300 사용자 설명서

63

N

A

B Button

For the purpose of focusing the camera, pressing 
the 

B button has the same effect as pressing 

the shutter-release button halfway.

A

In continuous-servo AF, the camera will initiate predictive focus tracking if 
the subject moves toward or away from the camera while the shutter-
release button is pressed halfway or the 

B button is pressed.

 

This 

allows the camera to track focus while attempting to predict where the 
subject will be when the shutter is released.

A

For information on using focus priority in continuous-servo AF, see 
Custom Setting a1 ([AF-C priority selection], pg. 267).

 

For information on 

using release priority in continuous-servo AF, see Custom Setting a2 ([AF-S 
priority selection], pg. 268).

 

For information on preventing the camera 

from focusing when the shutter-release button is pressed halfway, see 
Custom Setting a5 ([AF activation], pg. 271).

B button