A special effect works in the mind of the spectator when the various manipulations that allowed the creation of the shot become invisible, even imperceptible. The spectator must forget that what he sees on the screen is not authentic, that it was not fully shot in one take or even by a single camera. Composite image is made from different visual elements, and it has been one of the areas of special effects from the early days of cinema until today. From live action cinema to animation techniques, from Georges Méliès to BUF Company, the object of this article is to study the creation of composite images in the field of movies special visual effects. Who are the specialists who work for these spectacular productions, capable of making believable images in the most impossible visions of an author or a filmmaker?