Nikon D4 - Manual (Page 284)

258
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Playback Mode
To add a voice memo to the photograph currently displayed in
full-frame playback or highlighted in the thumbnail list (
0 235):
1
Choose a photograph.
Display or highlight the photograph.
Only one voice memo can be recorded
per image; additional voice memos can
not be recorded for images already
marked with a
h icon.
2
Press and hold the H button.
A voice memo will be recorded while the
H button is held down (note that no voice
memo will be recorded if the
H button is
not held down for at least one second).
A
During Recording
During recording, the C icon in the rear
control panel will flash. A countdown timer
in the rear control panel shows the length of
the voice memo that can be recorded (in
seconds).
In playback mode, a C icon is displayed in the
monitor during recording.
H button
Rear control panel