Abstract: An apparatus for developing a photographed film comprises a turn table on which processing liquid cups are mounted, a rotary device for rotating the film to be developed, and a device for descending and ascending the rotary device into and out of the liquid cups, respectively. The rotary device is formed separately from the descending and ascending device but is detachably supported thereon. The rotary device comprises a housing, a small motor contained in the housing with an output shaft thereof connected to an outwardly projecting rotary member, and a cylindrical holder for detachably holding the housing thereon, the holder having a hollow space adapted to snugly contain a magazine of the film which has a rotary spool engageable with the rotary member projecting from the housing.