GSK-99

The Army Type 99 Ultra Small Aerial Camera (GSK-99) entered service in 1940. Unlike the standard Navy Type 99 and Army Type 100 models, the GSK-99 had interchangeable roll holder backs for 120 film. The camera has a wind up mechanism that triggered both film advance and cocked the shutter, allowing for rapid shooting of up to six images. In total, ten 6×6 images can be fit on a 120 roll of film. In total, about 3,000 units may have been built by Tōkyō Kogaku and Konishiroku. The Tōkyō Kogaku-built GSK-99 was equipped with a fixed focus 75mm f=3.5 Simlar lens, while the Konishiroku-built GSK-99 was fitted with a fixed focus 75mm f=3.5 Hexar lens, set in a Compur-type Seikosha shutter.

Army Type 99 Ultra Small Aerial Camera (GSK-99). Pictures by Dirk HR Spennemann. (Image rights)