Observational documentaries consist of the documentary maker following the person around to observe the events that happen in their life.
The equipment can be quite informal , for example there is a lot of using hand held cameras.
Usually no interviews are included and there is no interviews.
Long takes are used and synchronous sounds are incorporated.
The direct address of expository may be contrasted with the observational mode , where the documentary appears to take a detached neutral stance towards its subject matter.
Observational Documentaries arose from available , light weight portable cameras. It allowed film makers to record unobtrusively. It stresses the non-intervention of film maker. The Editing if any , does not attempt to construct time frame or rhythm but enhances impression of real time.
Boston director Frederick Wiseman, considered to be the master of observational cinema, is known for his ground breaking studies of institutions and big social issues.
In his films, carefully edited and arranged actuality scenes speak for themselves. There is no intervention by the filmmaker, no interview questions, no commentary to camera, no narration. Also, on location, he records the sound and handles the microphone. Freed from looking through the viewfinder, the director is able to pay better attention to what’s going on around him and anticipate the action. He also communicates with his camera person through pre-arranged hand signals and directs by pointing his microphone at what he wants filmed.