The Ricoh Auto Half was made in Japan by Ricoh from c.1960-1963. It was a 35mm half frame camera, with clockwork motor film advance for 25 to 30 exposures. The 25mm f2.8 3 groups 4 elements lens was surrounded by the selenium cell operating the exposure metering, setting aperture automatically, with manual override option. Shutter speeds were 1/30 sec. (flash sync.) or 1/125 sec. with automatic exposure.