Bronica's improved 6x6 SLR — stronger advance, focal-plane shutter, interchangeable backs, 1969.
The Bronica S2A is a late-1960s medium-format SLR that improved on the S2 within Zenza Bronica's square-format system. The main revisions strengthened the film-advance gearing, addressing a durability weakness of the earlier body, while keeping the same modular layout and lens mount.
It is a medium-format (6x6) SLR producing a 56x56mm square frame on 120 film through interchangeable film backs. It uses a body focal-plane shutter and the downward-travelling instant-return mirror common to the S series. The body takes interchangeable finders and focusing screens and mounts Bronica S-series bayonet lenses; there is no built-in meter.
With sturdier internals than the S2, the S2A was well suited to steady studio and portrait use and general medium-format work where reliability over many rolls matters. It remains an all-mechanical, tripod-friendly camera with the square waist-level viewing typical of the line.
Even with the stronger gearing, test the film advance and shutter cocking, since heavy past use can still cause wear, and check the downward mirror action. Inspect the focal-plane curtain, film-back seals and dark slide, focusing screen, and finder mirror. Confirm lenses are the correct S-mount type for the body.