The documentary is the category of video productions, which tries to capture reality on film. But since the selection of the camera the cutout in post-productionor the editing of the film is obviously done subjectively, you can no longer speak of an objectivity in filmmaking.
From purely observational films to (after) staged scenes, anything is possible. Today even Hollywood productions are filmed in documentary style, so that the viewers the impression as if it is a documentary, even though everything is set.
Check out the website www.glueckspilze-film.ch and see the trailer of the newest documentary from Verena Endtner made by ALOCO.