Nikon D4S - Manual (Page 223)

201
l
A
Flash Control Mode
The information display shows the flash control mode for optional flash
units as follows:
Flash sync Auto FP ( 0 331)
i-TTL
Auto aperture (AA)
Non-TTL auto flash (A)
Distance-priority manual
(GN)
Manual
Repeating flash
—
Advanced wireless
lighting
D
Use Only Nikon Flash Accessories
Use only Nikon flash units. Negative voltages or voltages over 250 V
applied to the accessory shoe could not only prevent normal operation,
but damage the sync circuitry of the camera or flash. Before using a
Nikon flash unit not listed in this section, contact a Nikon-authorized
service representative for more information.