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4
Set the flash mode on all the flash units to t.
• Turn on all flash units and make sure their Standby functions are canceled.
5
Follow the same procedures as in normal TTL Auto Flash
t mode.
• When all flash units are set to Manual flash ƒ mode, Manual multiple flash
operation is performed.
TTL multiple flash operation using the Wireless
Slave Flash Controller SU-4 (optional)
• TTL multiple flash operation is possible by using the camera’s built-in
Speedlight or a Speedlight mounted on the camera’s hot shoe as the
master flash unit, and one or more Speedlights mounted on the Wireless
Slave Flash Controller SU-4s as slave flash units. The SU-4’s built-in light
sensor not only detects when the master flash unit fires to trigger the slave
flash unit, but also controls the flash duration of the slave flash unit in sync
with the master flash unit.
• Manual multiple flash operation is also possible by setting the flash mode
selector to manual (M).
• These Nikon Speedlights are usable:
• SB-29, SB-28/28DX, SB-27, SB-26, SB-25, SB-24, SB-23, SB-22s, SB-22,
SB-20, SB-18, SB-16B, SB-15
• For more information, refer to the instruction manual provided with the SU-4.
SU-4