Thom Hogan wrote:

Nikon is trying to be consistent with what they've done for over a decade. One simplification on the Zf is that it doesn't have the Steady/Erratic subject motion option, and this could be an issue if your camera handling is shaky.

Probably a naive question here but doesn’t IBIS at least help in this situation? I suppose though when not using tracking the focus point has to  move if the camera moves.