Nikon D300 User Manual

Page 89

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63

N

A

The

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

Predictive Focus Tracking

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

See Also

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 single-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

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