Nikon D6 Reference Manual page 827

Flash Control Mode
Choose a flash control mode and adjust other settings for
SB-5000, SB-500, SB-400, or SB-300 flash units mounted on the
camera accessory shoe.
•
The contents of the [Flash control mode] display vary with
the options selected.
•
Settings for units other than the SB-5000, SB-500, SB-400, and
SB-300 can only be adjusted via the controls on the flash unit.
•
Settings for the SB-5000 can also be adjusted using the
controls on the flash unit.
Option
[TTL]
[Auto external flash]
[Distance-priority
manual]
[Manual]
[Repeating flash]
Flash output is adjusted automatically in
response to lighting conditions.
Light from the flash is reflected from the
subject to an auto external flash sensor and
flash output adjusted automatically.
Choose the distance to the subject; flash
output will be adjusted automatically.
Choose the flash level manually.
The flash fires repeatedly while the shutter is
open, producing a multiple-exposure effect.
C The Photo Shooting Menu: Shooting Options
Description
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