How do I operate the FocusONE? Ashley July 26, 2018 20:29 Please check out our User's Manual video below to learn how to operate your focusONE! Related articles Why is there play on the knob of my FocusONE? Is something wrong? Focus Module How do I assemble the Focus Module? How do I teach a new lens to the Motion Kit? My Focus Module skips teeth and does not stop at macro or infinity. What can I do? Comments 0 comments Please sign in to leave a comment.