After many years and many models of modular medium format SLR cameras based on focal plane shutters, the last three SLR models made by Bronica were all based on lens shutters, with several versions of each one. This is the SQ-A, the second of five versions of the 6×6 camera that takes square photos and was released in 1982. The first model of this line, the SQ, was released in 1980. It’s bigger than the ETR but not all that much different in practical use. I mostly use this one handheld, and absolutely love taking square photos; probably largely under the influence of my Dad, who shot 6×6 almost exclusively from 1956 to 1963 and left behind a treasure of well preserved and well organized black and white negatives. You can also shoot 6×4.5 photos with this body if you use the appropriate film back. And speaking of film backs, there are a couple of different designs. The original SQ back had the ISO dial on the top, like you can see in the photo of the 645 back below. But when the SQ-Ai was released it came with an improved back that has the ISO dial on the back where it is easily accessible, and it also includes an EV comp dial. This new placement of the dial is especially helpful when using the prism VF because it renders the dial on the original back almost completely inaccessible.
For photos taken with this camera look here.
The original lenses for the SQ are called the S series. Later on Bronica introduced an improved line and called it the PS series. All of my lenses are of the original series.