Nikon D3X - Manual (Page 377)

351
U
Auto Image Rotation
Photographs taken while [On] (the default option) is selected
contain information on camera orientation, allowing them to be
rotated automatically during playback (pg. 287) or when viewed in
ViewNX (supplied) or Capture NX 2 (available separately; pg. 391).
The following orientations are recorded:
Camera orientation is not recorded when [Off ] is selected. Choose
this option when taking photographs with the lens pointing up or
down.
A
Rotate Tall
To automatically rotate “tall” (portrait-orientation) photographs for
display during playback, select [On] for the [Rotate tall] option in the
playback menu (pg. 287). Note that because the camera itself is already in
the appropriate orientation during shooting, images are not rotated
automatically during image review (pg. 228).
Voice Memo
The voice memo menu contains options for recording voice
memos during shooting. See “Voice Memos: Recording Voice
Memos” (pg. 248).
Landscape (wide)
orientation
Camera rotated 90°
clockwise
Camera rotated 90°
counter-clockwise