Nikon D780 DSLR Camera (Body Only) - Manual (Page 511)

465 On-Camera Flash Photography
The options available depend on the mode selected with the
mode dial.
Flash Modes
Option Description Available in
I
[ Fill flash ]
(front-curtain
sync)
This mode is recommended for
most situations. In modes
P and
A , shutter speed will
automatically be set to values
between
1 /
200
s (or 1 /
8000
s with
Auto FP High-Speed Sync) and
1 /
60
s.
b , P , S , A ,
M , EFCT ( j
and m
excluded)
J
[ Red-eye
reduction ]
(red-eye
reduction)
Use for portraits. The flash fires
before the photograph is taken,
reducing “red-eye” (a flash unit
with red-eye reduction is
required). Not recommended
with moving subjects or in other
situations in which quick shutter
response is required. Do not
move camera during shooting.
b , P , S , A ,
M , EFCT ( j
and m
excluded)