Patw28 Loc: PORT JERVIS, NY

The 622n-TX User manual lists compatible cameras up to the D700 but does not add the D750.
With the SB-900 mounted on a 622n and kept in the iTLL mode, it follows the settings from the 622N-TX for aperture, zoom and power but indicates A or GN rather than TLL.
The Sb900 Does not fire in the 622N-TX's TLL mode.
It does behave fine in the 622's manual mode.

I have the 1.05 v upgrade installed in the 622N-TX.
Yes, the Group and CH are set correctly. Everything is ON.

Trouble between the headsets?

ptcanon3ti Loc: NJ

I use mine with no issues.

Rick36203 Loc: Northeast Alabama

Yes, the yn-622n-tx controller will work on the D750 and should control power and zoom on any Nikon TTL capable or compatible flash.



Not sure I understand what you're saying here. The controller has nothing to do with camera aperture. And, I'm not familiar with a headset for the yn-622-n-tx.

To function properly the correct channel and group must be selected on the controller and receiving 622n, the off camera flash must be in TTL mode, and the 622n receiver that the flash is mounted to must also be in TTL mode.

If your off-camera flash is in "manual mode" it will fire, but power and zoom will not be affected by the controller. It should "always" be in TTL mode. The controller uses a "faux manual mode" to control remote flash power and zoom. When the controller sets power "manually", the off-camera flash still fires its pre-flash in TTL mode. The controller just ignores the pre-flash evaluation made by the camera and sends user defined power and zoom settings back to the flash for the primary flash.