CINEMATOGRAPHY

The other basic set of techniques for trick cinematography involves double exposure of the film in the camera, which was first done by G.A. Smith in July 1898 in England. His The Corsican Brothers was described in the catalogue of the Warwick Trading Company, which took up the distribution of Smith's films in 1900, thus:
One of the twin brothers returns home from shooting in the Corsican mountains, and is visited by the ghost of the other twin. By extremely careful photography the ghost appears *quite transparent*. After indicating that he has been killed by a sword-thrust, and appealing for vengeance, he disappears. A ‘vision’ then appears showing the fatal duel in the snow. To the Corsican's amazement, the duel and death of his brother are vividly depicted in the vision, and finally, overcome by his feelings, he falls to the floor just as his mother enters the room.”
The ghost effect was simply done by draping the set in black velvet after the main action had been shot, and then re-exposing the negative with the actor playing the ghost going through the actions at the appropriate point. Likewise, the vision, which appeared within a circular vignette or matte, was similarly superimposed over a black area in the backdrop to the scene, rather than over a part of the set with detail in it, so that nothing appeared through the image, which seemed quite solid. Smith used this technique again a year later in Santa Claus.