The Bronica SQ-A was the second model introduced in Bronica's line of medium format SLR cameras. Introduced in 1982, the SQ-A offered only a couple improvements upon the original SQ model, but they are noteworthy. Importantly, the SQ-A featured a mirror lock-up mechanism. Given the camera's rather large, clunky mirror system, the mirror lock-up feature is a valuable one when shooting at speeds between 1s - 1/15th or with long telephoto lenses. The SQ-A also enjoyed compatibility with newer AE metered prism finders that allowed for auto exposure setting.
Beyond these updates, the SQ-A remained very similar to the SQ model in that it is a modular, medium format SLR camera that produces 6x6cm images using 120 roll film. The camera allows for the changing of lenses, film backs, prisms, and winder grips. The camera has an electronic leaf shutter located in the lens with speeds ranging from 8s to 1/500 with flash sync capable at any speed.
In our experience the Bronica SQ system has proven to be sneaky good. The cameras are generally pretty reliable, inexpensively priced and the Zenzanon lenses perform admirably. Perhaps due to the mechanical issues that early Bronica S cameras experienced, later Bronica cameras such as the SQ series are thought to be unreliable or prone to issues. We have yet to experience this to any greater degree than other electronic medium format cameras from this era such as the Mamiya M645 or Pentax 645 cameras. If you are intrigued medium format SLR and cannot afford a Hasselblad, give the Bronica SQ cameras some consideration!