The following pinouts are used in the MC-DC3 connector (headphone port) on the Z50II and Z5II models (connections from left to right, top first, when looking into connector):
- Tip — Release
- Ring 1 — Focus
- Ring 2 — GND (Ground)
- Ring 3 — no connection?
This information is not verified, nor it it certified by Nikon. Use at your own risk.