ETT REE Note: when the Camera is fitted in a Protective Silicone Case, the mounting : i screws of some tripods may be too short, in which case the Adapter Nut i should be used. ( Adjusting Camera Focus Manually a. Turn the focus ring fully clockwise to set the camera focus for objects at distances ranging from 80 cm to infinity. This is the factory preset focus setting. The focus ring is in the preset position when the green focus marker aligns with the LED, as shown.