The range of movement for focusing the camera is very small, so it can be fine-tuned while you are using the instrument. The dental camera is focused by bringing the camera section further from or closer to the handle. Depending on what you are capturing, you may want to preset the starting focus. With the focus fully retracted, you can capture the largest area. The following is a guide for starting focus positions.
Full face: focus fully retracted.
Full smile: focus almost fully retracted.
Two teeth: focus set on the red circle.
Extreme close-up: focus fully extended.