Cinéma vérité (/ˈsɪnɪmə vɛrɪˈteɪ/; French:
            [sinema veʁite]; "truthful cinema"
      is a style of film making,
           invented by Jean Rouch &          
inspired by  Dziga Vertov's
        theory about Kino-Pravda &   influenced
by the films of Robert Flaherty’s, it combines
improvisation with using the camera
to unveil truths of a higher order
  or to highlight subjects hidden behind reality;
 Cinéma vérité in relationship to direct cinema
                                           and observational cinema:         
                  if understood as "pure"         cinema:
                         without a narrator's perspective;
There are subtle,            important, differences
among the terms although                expressing similar concepts:
"Direct Cinema"                                 largely concerned with  
                             recording         events in which the subject
and audience become                           aware of the camera's
presence:                         operating within what Bill Nichols,
                               American film historian and theoretician
of documentary film,               likens the observational mode
to smashing the "fly on the wall";       many therefore seeing
a paradox
in drawing attention away from
the camera while     simultaneously interfering
in the reality it registers                in attempting
to discover                                 cinematic truths