My Camera >Lenses50SAMSUNG 20-50 mm F3.5-5.6 ED II lens (example)7123564No.Description1Lens mount index2Zoom lock switch3Lens4Focus ring (p. 92)5i-Function button (p. 64)6Zoom ring7Lens contactsLocking or unlocking the lensTo lock the lens, pull and hold the zoom lock switch away from the camerabody and rotate the zoom ring as shown in the illustration.