Nikon D810 - Manual (Page 355)

331
This option determines the slowest shutter speed available
when using front- or rear-curtain sync or red-eye reduction in
programmed auto or aperture-priority auto exposure modes
(regardless of the setting chosen, shutter speeds can be as slow
as 30 s in shutter-priority auto and manual exposure modes or at
flash settings of slow sync, slow rear-curtain sync, or red-eye
reduction with slow sync).
Choose the flash mode for the built-in flash.
e2: Flash Shutter Speed
G
button ➜ A Custom Settings menu
e3: Flash Cntrl for Built-in Flash
G
button ➜ A Custom Settings menu
Option Description
r
TTL
Flash output is adjusted automatically in response to
shooting conditions.
s
Manual
Choose the flash level. The camera does not emit
monitor pre-flashes.
t
Repeating
flash The flash fires repeatedly while the shutter is open,
producing a strobe-light effect.
u
Commander
mode
Use the built-in flash as a master flash controlling
remote optional flash units in one or more groups
(0 334).