Nikon Df User Manual page 53

A
The Shutter-Release Button
The camera has a two-stage shutter-release button. The camera focuses
when the shutter-release button is pressed halfway. To take the
photograph, press the shutter-release button the rest of the way down.
A
The Standby Timer
The viewfinder and the control panel shutter speed and aperture
displays will turn off if no operations are performed for about 6 seconds,
reducing the drain on the battery. Press the shutter-release button
halfway to reactivate the display. The length of time before the standby
timer expires automatically can be selected using Custom Setting c2
(Standby timer, 0 251).
Exposure meters
on
A
Camera Off Display
If a battery and memory card are inserted, the
number of exposures remaining will be
displayed when the camera is turned off.
Focus: press halfway
Exposure meters
off
Shoot: press all the way
down
Exposure meters
on
Control panel
s
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