Zeiss Contaflex Super BC, Chr w/50mm f2.8 Tessar (1967-70) 35mm SLR, similar to the Contaflex Super B, (rapid film advance, accessory shoe on prism housing, interchangeable magazine backs, coupled exposure meter) but no external exposure meter window, instead, it has an internal TTL CdS meter. Aperture priority automatic exposure control. This is the first camera to feature TTL auto exposure. Available in chrome or black finish. Interchangeable auxiliary front lens elements.