Nikon SB-5000 Reference Manual page 86

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Direct remote wireless multiple flash-unit photography
• This is the same as the "SU-4 type wireless multiple flash-unit
photography" of the SB-910 and SB-700.
• The camera's built-in flash or the Speedlight attached to the camera can
be used as the master flash unit.
• Be sure to cancel the master flash unit monitor pre-flash function or
select a master flash unit flash mode that does not activate monitor pre-
flashes.
• The flash mode is set on each remote flash unit. Set the same flash
mode on each remote flash unit when using multiple remote flash units.
Using optical control and radio control concurrently is also possible.
For details, see D-43.
D
D-6