Nikon D750 DSLR Camera (Body Only) - Manual (Page 380)

352
9
Frame the photograph, focus, and shoot.
After confirming that the camera flash-ready light and the
flash-ready lights for all other flash units are lit, frame the
photograph, focus, and shoot. FV lock (
0 190) can be used if
desired.
A The Flash Sync Mode Display
M does not appear in the information display when – – is selected for
Built-in flash > Mode .
A Flash Compensation
The flash compensation value selected with the M ( Y ) button and
sub-command dial is added to the flash compensation values selected
for the built-in flash, group A, and group B in the
Commander mode
menu. A Y icon is displayed in the control panel and viewfinder when
a flash compensation value other than ±0 is selected for the built-in
flash or remote flash units in TTL or AA mode. The
Y icon flashes
when the built-in flash is in mode M .
D
Commander Mode
Position the sensor windows on the remote flash units to pick up the
light from the built-in flash (particular care is required if the camera is
not mounted on a tripod). Be sure that direct light or strong reflections
from the remote flash units do not enter the camera lens (in TTL mode)
or the photocells on the remote flash units (AA mode), as this may
interfere with exposure. To prevent timing flashes emitted by the
built-in flash from appearing in photographs taken at short range,
choose low ISO sensitivities or small apertures (high f-numbers) or use
an optional SG-3IR infrared panel for the built-in flash. An SG-3IR is
required for best results with rear-curtain sync, which produces
brighter timing flashes. After positioning the remote flash units, take a
test shot and view the results in the camera monitor.
Although there is no limit on the number of remote flash units that
may be used, the practical maximum is three. With more than this
number, the light emitted by the remote flash units will interfere with
performance.