The Topcon IC-1 Auto is a 1973-1978 35mm SLR from Tokyo Kogaku named for the Integrated Circuit which controlled its shutter priority auto exposure.
It is usually bundled with a 50mm f/2 Hl Topcor 6 element lens which is compatible with the UV lens mount. It has an electronic, metal focal-plane shutter with speeds from 1s to 1/500 with B. Flash sync is at 1/60 a sec. It features a TTL center weighted metering system using two CdS cells. The meter has a range of 5 to 18 EV at (ASA 100, 50mm f/2), settable to film speeds from 25 to 3200 ASA. It uses a 1.35v mercury battery. The film transport uses a single stroke film advance lever and a rewind crank.