Nikon D6 Reference Manual page 380

A
Adjusting Multiple Exposure Settings
When [Multiple exposure] is selected for Custom Setting f3 [Custom
controls] > [BKT button], [Multiple exposure mode] (Step 2) and
[Number of shots] (Step 3) can be selected using the BKT button and
command dials.
•
Hold the BKT button and rotate the main
command dial to choose from the following
multiple exposure modes: a ([Off]), 1
([On (single photo)]), and b ([On (series)]).
•
You can choose the number of shots by
holding the BKT button and rotating the
sub-command dial until the desired value is
displayed in the top control panel.
A
Multiple Exposure: Restrictions
Multiple exposure cannot be combined with some camera features,
including:
•
Movie recording
•
Bracketing
•
HDR (high dynamic range)
•
Interval-timer photography
•
Time-lapse movies
•
Focus shift
328
Combining Multiple Exposures in a Single Photo (Multiple Exposure)