The EyeLiner and EyeDirect are devices that use mirrors to superimpose the director’s image over the lens—much like an Interrotron. The EyeLiner is an older version. We rent out the newest EyeDirect Mark II. It’s great: you’re in eye-contact-heaven. Body gestures too! The lens opening is 140mm. The VoxBox is a newer system from Britain which improves on certain areas of the EyeDirect.