Samsung NX300 User Manual page 47

Lenses
My Camera >
To unlock the lens, rotate the zoom ring as shown in the illustation until
you hear the click.
You cannot capture a photo when the lens is locked.
SAMSUNG 16 mm F2.4 lens (example)
1
2
3
4
No. Description
1
i-Function button (p. 60)
2 Lens mount index
3
Focus ring (p. 88)
4
Lens
5
Lens contacts
5
46