Observational documentaries attempt to simply and spontaneously observe lived life with a minimum of intervention. Filmmakers who worked in this sub-genre often saw the poetic mode as too abstract and the expository mode as too didactic. The first observational docs date back to the 1960’s; the technological developments which made them possible include mobile lighweight cameras and portable sound recording equipment for synchronized sound. Often, this mode of film eschewed voice-over commentary, post-synchronized dialogue and music, or re-enactments. The films aimed for immediacy, intimacy, and revelation of individual human character in ordinary life situations.
Examples: Frederick Wiseman’s films, e.g. High School (1968); Gilles Groulx and Michel Brault’s Les Racquetteurs (1958); Albert & David Maysles and Charlotte Zwerin's Gimme Shelter (1970); D.A. Pennebaker's Don’t Look Back (1967), about Dylan’s tour of England; and parts (not all) of Jean Rouch and Edgar Morin's Chronicle Of A Summer (1960), which interviews several Parisians about their lives. An ironic example of this mode is Leni Riefenstahl’s Triumph Of The Will (1934), which ostensibly records the pageantry and ritual at the Nazi party’s 1934 Nuremberg rally, although it is well-known that these events were often staged for the purpose of the camera and would not have occurred without it. This would be anathema to most of the filmmakers associated with this mode, like Wiseman, Pennebaker, Richard Leacock and Robert Drew, who believed that the filmmaker should be a “fly-on-the-wall” who observes but tries to not influence or alter the events being filmed.