The Bronica GS-1 is a medium-format SLR that can shoot formats up to 6x7cm on 120 rollfilm, but right out front: this GS-1 comes with a 6x4.5cm back, not the usual 6x7. Strange but true! If you want to shoot 6x7 with this camera, it's definitely possible, but you'll need an 6x7 back, which is not included. The camera is relatively compact, though- much smaller than a Mamiya RB/RZ camera- and while it doesn't have the rotating back and built-in bellows systems of those cameras, the size and weight savings (plus the built-in light meter!) might be worth it. This GS-1 is in really excellent condition, with only the most minor cosmetic wear. Camera and prism functions are tested and accurate; shutter speeds are accurate. The lens is free of fungus, but does have very light patterned haze and light dust, neither of which should affect imaging.