Minolta made a lot of single lens reflex cameras from the early, SR-2 in 1958, the X-700 in 1981, the 7000 in 1985 and later the amazing 7 and 9. From the 7000 model, the mount and auto focus system remain the same, "A mount" that was used through the digital SLR Konica-Minolta bodies and now Sony's Alpha line.