Ōki
Ōki Kōgaku Seiki Seisaku-sho (大木光学精機製作所, i.e. "Ōki precision machinery factory") was a Japanese company based in Tokyo, Arakawa.[1] It was the producer of two cameras during the Second World War, the Oko Six and Oko Semi. It probably made the four-element Oko or Okor lenses mounted on these cameras. It also made Hildar and Oscar lenses for the Semi Rosen U and Primo distributed by Ōsawa Shōkai.
Camera list
- Oko Six I and II (6×6 folder)
- Oko Semi (4.5×6 folder)
Lens list
- Hildar 75/4.5 on the Semi Rosen U, also reported on an example of the Semi Lucky[2]
- Hildar 75/3.5 on the Semi Rosen U
- Oscar 75/4.5 on the Primo I
- Oscar 75/3.5 on the Primo II
- Okor (or Oko) 75/3.5 on the Oko Six and Oko Semi
The Hildar and Oscar lenses have three elements and are probably identical.[3] The Oko or Okor lens has four elements.[4]
Bibliography
- "Kokusan shashinki no genjōchōsa" (国産写真機ノ現状調査, Inquiry into Japanese cameras), listing Japanese camera production as of April 1943. Reproduced in Supuringu kamera de ikou: Zen 69 kishu no shōkai to tsukaikata (スプリングカメラでいこう: 全69機種の紹介と使い方, Let's try spring cameras: Presentation and use of 69 machines). Tokyo: Shashinkogyo Syuppan-sha, 2004. ISBN 4-87956-072-3. Pp.180–7.
- McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover).