Kawakami
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Kawakami Seimitsu Kikai Seisakusho (川上精密機械製作所) was a Japanese company based in Tokyo, Itabashi in 1943.[1] It is listed in the "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), but not the exact nature of its activity. Making of lenses seems to have been a main activity. It seems that sooner or later the company was renamed to RolMax Ind. Co. Ltd. since its lens brand was known as RolMax. The company may also have produced OEM lenses.
Lenses
lenses for 35mm SLRs (M42 or Exakta/Topcon mount)
- Kawanon f=25mm 1:3.5[2]
- Kawakami Seiki Co., Ltd. Optrogon f=135mm 1:3.5
- Kawakami Seiki Co., Ltd. RolMax f=135mm 1:3.5[3]
- RolMax Ind. Co., Ltd. Rolmax f=180mm 1:3.5
Notes
- ↑ Its address in 1943 was Tōkyō-to Itabashi-ku Itabashi-chō 3–550 (東京都板橋区板橋町3–550). Source: "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), listing the Japanese camera production as of April 1943.
- ↑ Kawanon f=25mm 1:3.5 in flickr images by Yumi Abe
- ↑ discussion at forum.mflenses.com [1]. The discussion says that Kawanon was also a brand used for Kawakami lenses, after Kowa interdicted the use of the brand Kowanon.
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.
