Nikon Nikon Df Product Manual - Page 283

f4: Assign Fn Button G button ➜ A Custom Settings menu Choose the role played by the Fn button, either by itself (Press) or when used in combination with the command dials (Press + command dials). ❚❚ Press Selecting Press displays the following options: Option q Preview r FV lock B AE/AF lock C AE lock only D AE lock (Reset on release) E AE lock (Hold) F AF lock only A AF-ON s Flash off Description Press the Fn button to preview depth of field (0 41). Press the Fn button to lock flash value (supported flash units only, 0 118). Press again to cancel FV lock (0 130). Focus and exposure lock while the Fn button is pressed. Exposure locks while the Fn button is pressed. Exposure locks when the Fn button is pressed, and remains locked until the button is pressed a second time, the shutter is released, or the standby timer expires. Exposure locks when the Fn button is pressed, and remains locked until the button is pressed a second time or the standby timer expires. Focus locks while the Fn button is pressed. Pressing the Fn button initiates autofocus. The flash will not fire in photos taken while the Fn button is pressed. U 263