Nikon P7800 - Manual (Page 240)

Re
feren
ce
S
ect
io
n
E 112
B
Notes About Using the Remote Flash Unit
• Set up the remote flash unit in a position close to the subject from the camera to
ensure the light from the Speedlight to enter the sensor window.
• Aside from monitor preflashes, the master flash unit emits a minute amount of
flashes to control the remote flash unit. When shooting a subject at a short
distance from the master flash unit, these minute amounts of flashes may cause
adverse effects and the proper exposure may not be achieved. To reduce such
adverse effects, use the wide panel for the master flash when the master flash unit
is directly facing a subject that is being shot at a short distance.