The Ceres is a leaf shutter found on some Japanese cameras from the 1950s. The range of speeds is usually B, 1–300, but some versions give B, 25–300 instead. This shutter was made by Fuji Seimitsu, which perhaps also made the Rectus leaf shutter.
Cameras equipped with a Ceres shutter
The following list is incomplete. That a particular model is listed should not be taken to mean that all examples were fitted with the Ceres.
- Avigo and Rafuray (B, 25–300, no self-timer)
- Easternflex (B, 1–300, self-timer)
- Elbowflex (B, 1–300, self-timer)
- First Six V (B, 1–300, self-timer, one isolated example)
- Prince Junior (B, 1–300, self-timer)
- Taroflex (B, 1–300, self-timer, one isolated example)
- Attribution of the Ceres to Fuji Seimitsu: advertisements dated September 1955, reproduced in Kokusan kamera no rekishi, p.121 (items 408 and 410) and p.136 (item 511).
- 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.