He used a single camera that moves from one character to another in a "whip pan," a documentary technique.
It added that markets were "hungry for popular documentary techniques, the use of presenters and the inclusion of more science".
The commercially successful film, which at first drew critical raves, subsequently faced criticism of its documentary techniques.
"Out 1" uses documentary techniques - uninflected observation, unscripted situations - not to capture reality but to generate fiction.
The interview is a common documentary technique.
The crew fights with Gilbert about his documentary technique, as he makes them film many personal moments.
The film will use a combination of documentary techniques and theatrical re-creations, depending on the subjects' accessibility.
Mainly using pure documentary techniques, he shot ethnographic films and tried docufiction.
Eventually, however, she decided to put aside the documentary technique and tell the women's truth through fiction.
King was a leader of the documentary technique known as cinema-verite.