Nikon Hot Shoe Pinouts

The following are the pinouts for the Nikon hot shoe:

x    4
2    3

  • Pin 1 — X (trigger)
  • Pin 2 — Rdy (ready to fire)
  • Pin 3 — Q (quench flash)
  • Pin 4 — SP (Speedlight present
  • mount — GND (Ground)

Note that different voltages are used on some of the pins to form a communication between camera and flash about abilities and state. 

This information is not verified, nor it it certified by Nikon. Use at your own risk.

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