Sugiyama (杉山) was a Japanese company in the first half of the 1940s. It is only known from the "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras") where it is mentioned as the maker of the Slick 3×4 camera and of the Slick lens and Sugiyama shutter mounted on it.
- ↑ "Kokusan shashinki no genjōchōsa" ("Inquiry into Japanese cameras"), item 156, lens item Jd1, shutter item 18-V-11.
- "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.