This document provides an overview of documentaries, including their objectives, historical origins, modes, subjectivity vs objectivity, styles, elements, and audience expectations. It begins with defining documentaries as factual films or programs about real world events meant to educate or entertain. It then discusses the objectives of documentaries like entertaining, educating, persuading, interrogating, promoting, and preserving. The document also covers the early history of documentaries dating back to 1895 and influential documentaries from different time periods and countries. It outlines several modes of documentaries like observational, expository, participatory, reflexive, poetic, and performative. Additionally, it discusses subjectivity versus objectivity and various styles like travel, diary form,