Documentary film
Modern documentaries

Box office analysts have noted that the documentary film genre has become increasingly successful in theatrical release with films such as Fahrenheit 9/11, Super Size Me, Food, Inc., Earth, March of the Penguins, and An Inconvenient Truth among the most prominent examples. Compared to dramatic narrative films, documentaries typically have far lower budgets which makes them attractive to film companies because even a limited theatrical release can be highly profitable.

The nature of documentary films has expanded in the past 30 years from the cinéma vérité style introduced in the 1960s in which the use of portable camera and sound equipment allowed an intimate relationship between filmmaker and subject. The line blurs between documentary and narrative and some works are very personal, such as Marlon Riggs 's Tongues Untied (1989) and Black Is...Black Ain't (1995), which mix expressive, poetic, and rhetorical elements and stresses subjectivities rather than historical materials.

Historical documentaries, such as the landmark 14-hour Eyes on the Prize: America's Civil Rights Years (1986 – Part 1 and 1989 – Part 2) by Henry Hampton, 4 Little Girls (1997) by Spike Lee, The Civil War by Ken Burns, and UNESCO-awarded independent film on slavery 500 Years Later, express not only a distinctive voice but also a perspective and point of views. Some films such as The Thin Blue Line by Errol Morris incorporate stylized re-enactments, and Michael Moore 's Roger & Me place far more interpretive control with the director. The commercial success of these documentaries may derive from this narrative shift in the documentary form, leading some critics to question whether such films can truly be called documentaries; critics sometimes refer to these works as " mondo films " or "docu-ganda." However, directorial manipulation of documentary subjects has been noted since the work of Flaherty, and may be endemic to the form due to problematic ontological foundations.

Documentary filmmakers are increasingly using social impact campaigns with their films. Social impact campaigns seek to leverage media projects by converting public awareness of social issues and causes into engagement and action, largely by offering the audience a way to get involved. Examples of such documentaries include Kony 2012, Salam Neighbor, Gasland, Living on One Dollar, and Girl Rising.

Although documentaries are financially more viable with the increasing popularity of the genre and the advent of the DVD, funding for documentary film production remains elusive. Within the past decade, the largest exhibition opportunities have emerged from within the broadcast market, making filmmakers beholden to the tastes and influences of the broadcasters who have become their largest funding source.

Modern documentaries have some overlap with television forms, with the development of "reality television" that occasionally verges on the documentary but more often veers to the fictional or staged. The "making-of" documentary shows how a movie or a computer game was produced. Usually made for promotional purposes, it is closer to an advertisement than a classic documentary.

Modern lightweight digital video cameras and computer-based editing have greatly aided documentary makers, as has the dramatic drop in equipment prices. The first film to take full advantage of this change was Martin Kunert and Eric Manes ' Voices of Iraq, where 150 DV cameras were sent to Iraq during the war and passed out to Iraqis to record themselves.
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