The Horizon was produced in two formats: the 205pc, which took 50.5×110 mm wide frames on 120 film, and the 202, which took 24×58 mm wide frames on perforated 35 mm film. The 202 has been superseded by the S3pro, a redesigned and improved camera with silent rotation and more exposure times.
An older version called the Horizont, produced in the Soviet Union in the 1960s, had an all-metal, rectangular body and a removable viewfinder. The technology of the "202" is basically the same, but the body covering is plastic, and has an integrated viewfinder, making it larger. Additionally, the 202 features a slow-speed shutter mechanism, with exposure times of 1/2, 1/4, 1/8, 1/60, 1/125, 1/250 of a second; the S3-Pro has exposure times of 1/250, 1/125, 1/60, 1/30, 1/8, 1/4, 1/2 and 1 second, slower rotation than the 202, and silent rotation.