My Camera >Lenses58SAMSUNG 20-50 mm F3.5-5.6 ED II lens (example)7123564No.Description1Lens mount index2Zoom lock switch3Lens4Focus ring (p. 103)5i-Function button (p. 47)6Zoom ring7Lens contacts** Avoid contact with or prevent damage to the lens contacts.Locking or unlocking the lensTo lock the lens, slide and hold the zoom lock switch away from the camerabody, and then rotate the zoom ring as shown in the illustration.