Documentary films aim to present real events and footage to audiences. Some conventions include using handheld cameras to appear more realistic, natural sound and lighting, authoritative voiceovers, archive footage for authenticity, and interviews with experts. Visual elements like text, titles, and visual coding are used to convey information to viewers. There are different modes of documentary, including performative which uses the filmmaker as a participant, reflexive which focuses on the representation process, participatory which involves interviewing subjects, and expository which subordinates images to narration.