Nikon D6 Reference Manual page 310

❚❚ Cancelling Bracketing
To cancel bracketing, press the BKT button and rotate the main
command dial until the number of shots in the bracketing
sequence is zero ( r ) and M is no longer displayed. The
program last in effect will be restored the next time bracketing
is activated. Bracketing can also be cancelled by performing a
two-button reset ( 0 312), although in this case the bracketing
program will not be restored the next time bracketing is
activated.
258
Varying Exposure or White Balance over a Series of Photographs (Bracketing)