For the Polish cast-alloy 35mm camera, see Alfa.
Alfa Camera Seisakusho (アルファカメラ製作所, Arufa Kamera Seisakusho) was a Japanese company, which made the Alfaflex and Cosmoflex TLR cameras from 1952 to 1954. Its address was Nerima-ku Minamimachi (練馬区南町) 3–6016 in Tokyo, and it used the English name Alfa Optical Co. for some camera markings.
The name Cosmo was re-used from 1955 by Cosmo Camera Seisakusho, certainly the successor of Tōyō Seiki Kōgaku. The latter was certainly the supplier of the TSK shutters of the Alfaflex and Cosmoflex II. Cosmo Camera Seisakusho was perhaps the result of a merge between Tōyō Seiki Kōgaku and Alfa Camera Seisakusho.
- User manual of the Cosmoflex II, whose extract is reproduced in this page, advertisements dated March 1953 and February 1954, reproduced in Kokusan kamera no rekishi, pp.117 and 136, and advertisement dated 1954 reproduced in Shashin-Bako.
- The name Alfa Kōki (アルファ光機) given here (archived) and here (archived) at Japan Family Camera and here at Aya's Camera is certainly a wrong back translation of "Alfa Optical Co."
- Alfa Camera Seisakusho (アルファカメラ製作所). User manual of the Cosmoflex II. Reproduced in this Flickr album by Juangotoh.
- Asahi Camera (アサヒカメラ) editorial staff. Shōwa 10–40nen kōkoku ni miru kokusan kamera no rekishi (昭和10–40年広告にみる国産カメラの歴史, Japanese camera history as seen in advertisements, 1935–1965). Tokyo: Asahi Shinbunsha, 1994. ISBN 4-02-330312-7.