Nikon Z9 Mirrorless Camera - Manual (Page 826)

826 Compatible Flash Units
1 Not available with spot metering.
2 Can be selected using the [ Flash control ] item in the camera menus.
3 Available only in i-TTL and M flash-control modes.
4 Available only in i-TTL flash-control mode.
Radio-controlled Advanced Wireless Lighting —
Color Information Communication (flash) 4
Color Information Communication (LED light)
4
Auto FP high-speed sync
4 3
FV lock 4 4
Red-eye reduction 4
Camera modeling illumination
4
Unified flash control
4
Camera flash unit firmware update 4
Supported features