Yashima Kōgaku was a short-lived optical company set up as a division of a Yashima company that was an OEM for audio components. It was run by Ushiyama Jisaburō (牛山次三郎), a brother of Ushiyama Yoshimasa (牛山善政), the founder of the much earlier Yashima that had renamed itself after its Yashica products in 1958.

Yashima produced one 35mm SLR, the Yashima EMC750 released in August 1976[1] (also sold as the Osanon Digital 750 and Rony EMC750). This was an aperture-priority AE body with an M42 lens mount.

Yashima went bankrupt in the early 1980s.

Sources and further reading[]

  • The Japanese Historical Camera. 日本の歴史的カメラ (Nihon no rekishiteki kamera). 2nd ed. Tokyo: JCII Camera Museum, 2004. P.172. The Osanon Digital 750 is listed, and described as having "a digital display in its finder for indicating exposure time by reverse counting".
  • Lewis, Gordon, ed. The History of the Japanese Camera. Rochester, N.Y.: George Eastman House, International Museum of Photography & Film, 1991. ISBN 0-935398-17-1 (paper), ISBN 0-935398-16-3 (hard). P.149.
  • Miyazaki Yōji (宮崎洋司). "Yomigaeru ka, M42 maunto renzu no sekai o yuku: Kokusan kamera mēkā to M42 renzu" (よみがえるか、M42マウントレンズの世界をゆく:国産カメラメーカーとM42レンズ). Shashin Kōgyō (写真工業), April 2003. Pp.50–51, 55.


In Japanese:

  1. Lewis, p.149.