Turn off the camera, so that the shutter automatically closes, protecting the lens.
Remove the lens from the camera body. Push down on the white release button and gently twist until it detaches.
Locate the four small screws on the underside of the lens. They are positioned through the white ring that connects to the camera body.
Remove the screws using a small screwdriver. Place the screws aside so as not to lose them before reassembly.
Remove the white mounting ring from the lens. Gently pull it free with your hands or use a pair of tweezers.
Remove the two screws on the right side of the lens barrel using a small screwdriver. Set them to the side.
Place the lens on a flat surface and carefully pull it apart.