This document discusses conventions for filming interviews. It notes that medium close-ups are most common as they focus on the interviewee's expression. Over-the-shoulder shots are used when someone is asking questions. For vox pops, interviewees typically look near but not directly at the camera. Relevant backgrounds and props can reinforce expert interviewees' points. Music is lowered during interviews to better hear responses. The document advises applying these conventions when filming expert interviews and vox pops for a documentary.