Nikon D3S User Manual page 274

Automatic Recording (Shooting Mode)
If On (Auto and manual) is selected for Voice memo (0 246),
a voice memo will be added to the most recent photograph when
shooting ends. Recording will end when the H button is pressed
or after the specified recording time has ended.
Manual Recording (Shooting Mode)
If On (Auto and manual) or Manual only is
selected for Voice memo (0 246), a voice
memo can be recorded for the most recent
photograph by pressing and holding the H
button. A voice memo will be recorded while
the 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).
D
Automatic Recording
Voice memos will not be recorded automatically if On is selected for the
Image review option (0 281) in the playback menu. A voice memo can
however be added to the photograph displayed during image review
e
even if Off is selected for Voice memo.
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Slot 2
If two memory cards are inserted and Backup or RAW Slot 1 - JPEG Slot 2
is selected for the Slot 2 option (0 88) in the shooting menu, voice
memos will be associated with the images recorded to the memory card
in slot 1.
248
H button