F: controls, F1: multi selector center button, 0 335) and f16 – Nikon D4S User Manual
Page 357: 0 335), g1, Shooting mode

335
U
This option determines the role assigned to the center of the multi
selector during viewfinder photography, playback, and live view
(regardless of the option selected, pressing the center of the multi
selector when a movie is displayed full frame starts movie
playback).
❚❚Shooting Mode
f: Controls
f1: Multi Selector Center Button
G button
➜ A Custom Settings menu
Option
Role assigned to center of multi selector
J
Select center focus point
Select the center focus point.
A
Preset focus point
Pressing the center of the multi selector
selects a preset focus point. To choose the
point, select it and press the center of the
multi selector while pressing the AF-mode
button until the focus point flashes.
Separate focus points can be selected for
“wide” (landscape) orientation and for
each of the two “tall” (portrait)
orientations if Focus point or Focus point
and AF-area mode is selected for Custom
Setting a10 (Store by orientation,
None
Pressing the center of the multi selector
has no effect in viewfinder photography.