What is a common feature of observational documentary films?

A common feature of observational documentary films is minimal filmmaker interference. This style emphasizes a naturalistic approach, focusing on real-life events as they unfold without the overt influence or presence of the filmmaker. The aim is to allow the audience to observe subjects and situations directly, providing an authentic representation of reality without scripted dialogue or heavy editing that could manipulate the viewer's perception.

Observational documentaries often avoid significant interaction between the filmmaker and subjects, reducing the likelihood of editorial shaping or bias, which allows viewers to form their own conclusions based on what they see. This technique often aligns with the principles of direct cinema, where the aim is to create a sense of immediacy and authenticity.

In contrast, options such as heavy editing and fictional storytelling are contrary to the core principles of this genre, as they would disrupt the objective of presenting a genuine documentary experience. Filmmaker involvement in events might also compromise the observational nature, as it can lead to a more influenced narrative rather than one that simply captures reality as it is.