Nikon SU 800 Instruction Manual - Page 26

Wireless multiple flash operation in the Nikon Creative Lighting System (CLS) When the SU-800 is used with Nikon CLS-compatible cameras, the remote flash units can be divided into a maximum of 3 groups, and the flash output level can be separately set for each group of Master/Commander and remote flash unit(s), providing wireless multiple flash operation (Advanced Wireless Lighting).  Master flash unit and remote flash unit(s) In this instruction manual, the Commander SU-800 and Speedlight mounted on the camera, a built-in flash or the one directly connected to the camera via a TTL Cord is called the Master/Commander flash unit. All other flash units are called remote flash units. Details of Advanced Wireless Lighting Group B (remote flash units) Group A (remote flash units) Group C (remote flash units) Master/Commander flash unit • Remote flash units can be divided into a maximum of three groups (A, B and C). • One or more remote flash units can be set to one group. • Flash mode and flash output-level compensation values can be set independently on the Master/Commander flash unit and for three other groups of remote flash units. • Select one of the four available channels through which the Master/Commander flash unit and three other groups exchange data. • If a photographer performs the same Advanced Wireless Lighting near you, your remote flash unit(s) might accidentally fire in sync with that photographer's master flash unit. If this happens, select a different channel number. 26