Nikon D3X a1: AF-CPriority Selection, a: Autofocus, E focus, F Focus, Release +, OptionDescription

a: Autofocus

a1: AF-C Priority Selection

This option controls whether	Focus mode selector
photographs can be taken
whenever the shutter-release
button is pressed (release priority)
or only when the camera is in focus
(focus priority) in continuous-servo
AF. To select continuous-servo AF,
rotate the focus mode selector to C.

OptionDescription

GRelease Photos can be taken whenever the shutter-release (default) button is pressed.

Release +	Photos can be taken even when the camera is not in
E focus	focus. In continuous mode, frame rate slows for
	improved focus if the subject is dark or low contrast.
F Focus	Photos can only be taken when the in-focus indicator
	(I) is displayed.

Regardless of the option selected, focus will not lock when the in- focus indicator (I) is displayed. The camera will continue to adjust focus until the shutter is released.

U

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