Nikon D6 Reference Manual page 715

Remote Flash Photography
What Is Remote Flash Photography?
Take pictures with one or more remote flash units using wireless
flash control (Advanced Wireless Lighting, or AWL). For
information on using a flash unit mounted on the camera
accessory shoe, see "On-Camera Flash Photography" ( 0 640).
Throughout this chapter, operations involving an accessory connected
to the camera are indicated by C , operations involving remote flash
units by f . For more information on using remote flash units ( f ), see the
manual provided with the flash unit.
What Is Remote Flash Photography?
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