2. Adjust the lens aperture to the maximum with the controller.
3. Aim the camera at an object 30 meters away and adjust the focal length to infinity (most of the lenses face the lens, and turn the front focusing ring clockwise to the end).
4. Use the controller to adjust the zoom of the lens to push the scene farthest, and adjust the intercept behind the lens to make the scene clearest.
5. Use the controller to adjust the zoom of the lens to pull the scene, and fine-tune the focal length of the lens to make the scene clearest.
6. Repeat steps 4-5 several times until the scene is always clear when the lens is zoomed.