Choose the role played by the Fn button on optional wireless remote controllers equipped with an Fn button. See Custom Setting f1 (Custom control assignment, 0 f1: Custom Control Assignment) for more information.

q Preview
r FV lock
B AE/AF lock
C AE lock only
D AE lock (Reset on release)
F AF lock only
h IDisable/enable
4 + NEF (RAW)
a Live view *

Performs the same function as the camera a button.