My first real camera was a Minolta SLR. When I got more serious, I went to Nikon F’s. When I did my grand tour of Africa and South America and my Russian tour with the San Francisco Symphony, my kit weighed 23 pounds. Too much. I then switched to a complete Olympus SLR system which was excellent and much lighter. However, when autofocus came out, Olympus never followed with their own autofocus cameras.