Nikon D90 user manual A6 AE-L/AF-L for MB-D80, A7 Live View Autofocus, 176

a6: AE-L/AF-L for MB-D80

Choose the function assigned to the AE-L/AF-L button on the optional MB-D80 battery pack. This option is available in all shooting modes.

	Option	Description
B	AE/AF lock *	Focus and exposure lock while the MB-D80 AE-L/AF-L button is pressed.
	(default)

CAE lock only * Exposure locks while the MB-D80 AE-L/AF-L button is pressed. F AF lock only * Focus locks while the MB-D80 AE-L/AF-L button is pressed.

AE lock	Exposure locks when the MB-D80 AE-L/AF-L button is pressed, and
	remains locked until the button is pressed a second time or the exposure
E (Hold)
	meters turn off.
A AF-ON *	Pressing the MB-D80 AE-L/AF-L button initiates autofocus.
	Flash value for the built-in flash and optional SB-900, SB-800, SB-600,
r FV lock	SB-400, and SB-R200 flash units locks when the MB-D80 AE-L/AF-L
	button is pressed (pg. 198), and remains locked until the button is
	pressed a second time or the exposure meters turn off.

xFocus point The focus point (pg. 56) can be selected by pressing the MB-D80 AE-L/

selection AF-L button and rotating the sub-command dial.

* Pressing 2 when these options are highlighted displays a Focus point selection sub-menu. If On is selected, the focus point can be chosen by pressing the MB-D80 AE-L/AF-L button and rotating the sub-command dial.

a7: Live View Autofocus

L This option (available in all shooting modes) determines how the focus point for autofocus is selected in live view. Choose from the following options:

Mode	Description
8 Face priority	The camera automatically detects and focuses on portrait subjects
	facing camera. Use for portraits; default for k and o modes.
Wide area	Use for hand-held shots of landscapes and other non-portrait subjects.
	The focus point can be selected manually. Default for i, j, l, m, P, S, A,
9 (default)
	and M modes.
! Normal area	Use for pin-point focus on a selected spot in the frame. A tripod is
	recommended. Default setting for n mode.

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