Birtac combined camera and projector, 1898.

Designed by the film pioneer, Birt Acres (1854-1918), this was the first film-making apparatus intended for amateur use. It used 17.5mm film, which was produced by slitting standard 35mm film in half. It is shown here set up as a projector. The taking lens is reversed and a lamphouse would have been set up to the left of the projector to provide illumination.