F4: assign ae-l/af-l button – Nikon D90 User Manual

Page 220

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200

L

f4: Assign AE-L/AF-L Button

Choose the role played by the AE-L/AF-L button. This option is
available in all shooting modes.

.

Option

Description

B

AE/AF lock
(default)

Focus and exposure lock while the AE-L/AF-L button is pressed.

C AE lock only

Exposure locks while the AE-L/AF-L button is pressed.

F AF lock only

Focus locks while the AE-L/AF-L button is pressed.

E AE lock (hold)

Exposure locks when the AE-L/AF-L button is pressed, and remains locked
until the button is pressed a second time or the exposure meters turn
off.

A AF-ON

The AE-L/AF-L button initiates autofocus. The shutter-release button can
not be used to focus.

r FV lock

Press the AE-L/AF-L button to lock flash value (built-in flash and SB-900,
SB-800, SB-600, SB-400, and SB-R200 flash units only, pg. 198). Press
again to cancel FV lock.

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