Flash Mode - Nikon Z 7 Reference Manual

Flash Mode

Choose a flash mode for optional flash units (0 352). The
options available depend on the mode selected with the mode
dial.
Option
I
Fill flash
J
Red-eye
reduction
K
Slow sync +
red-eye
L
Slow sync
The option currently selected is
indicated by an icon in the display
during shooting.
Available in
M
b, P, S, A, M
s
P, A
Option
Rear-curtain sync
Flash off
The i Button
Available in
P, S, A, M
b, P, S, A, M
105