Kowa's 6x6 SLR — leaf-shutter lenses, full flash sync, fixed body, 1968.
The Kowa Six is a late-1960s medium-format SLR from the Japanese maker Kowa, a 6x6 body built as a more affordable alternative to the established square-format systems. It uses a fixed body with interchangeable leaf-shutter lenses rather than interchangeable film magazines, which set it apart from the modular Hasselblad and Bronica designs.
It is a medium-format (6x6) SLR producing a 56x56mm square frame on 120 or 220 film in a fixed body without removable backs. Like other leaf-shutter systems it places the shutter inside each lens, so flash synchronises at all speeds. It takes interchangeable waist-level or prism finders and focusing screens and mounts Kowa Six bayonet lenses. There is no built-in meter; exposure is set manually or with an external meter.
The leaf-shutter lenses and full flash sync made the Kowa Six useful for portrait and studio work at a lower cost than the modular systems, and the square frame with waist-level viewing suits deliberate composition. Without interchangeable backs it is less flexible mid-roll but simpler and lighter than a full studio rig.
Test each lens leaf shutter for accurate speeds, as these are the timing mechanism and Kowa shutters can be difficult to service. Check the fixed body's film-path seals and film-wind mechanism, which is a known weak point, and inspect the mirror, screen, and waist-level finder mirror. Confirm foam seals have not perished and the lens-mount interlocks work.