Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR Lens (Black) - Manual (Page 9)

9
B Before Use Before Use
The lens is retractable and must be extended before use. Rotate the
zoom ring as shown until the lens clicks into the extended position.
Pictures can only be taken when the focal length mark points to
positions between 16 and 50 on the focal length scale.
Pictures can be taken at
these focal lengths
To retract the lens, rotate the zoom ring in the opposite direction,
stopping when you reach the (
● ) position on the focal length scale.
If the camera is turned on with the lens retracted, a warning will be
displayed. Extend the lens before use.