Nikon D800E User Manual page 85

Multiple Exposure
Do not remove or replace the memory card while recording a multiple
exposure.
Multiple exposures can not be recorded in live view. Taking
photographs in live view resets Multiple exposure mode to Off.
The information listed in the playback photo information display
(including date of recording and camera orientation) is for the first shot
in the multiple exposure.
[] Interval Timer Photography
If interval timer photography is activated before the first exposure is
taken, the camera will record exposures at the selected interval until the
number of exposures specified in the multiple exposure menu have
been taken (the number of shots listed in the interval timer shooting
menu is ignored). These exposures will then be recorded as a single
photograph and interval timer shooting will end (if On (single photo) is
selected for multiple exposure mode, multiple exposure shooting will
also end automatically). Cancelling multiple exposure cancels interval
timer shooting.
[] Other Settings
While a multiple exposure is being shot, memory cards can not be
formatted and some menu items are grayed out and can not be
changed.
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