Nikon NIKKOR Z 600mm f/4 TC VR S Lens (Z) - Manual (Page 33)

Slide the teleconverter switch lock in the direction shown
(
e
).
• The teleconverter switch is now locked.
• Return the teleconverter switch to 1× when the teleconverter is not in use.
D
The Teleconverter Switch Lock
After changing focal lengths, be sure to latch the teleconverter switch lock to
prevent unintended operation of the teleconverter switch.
33
The Built-in Teleconverter
3.