I had, in fact still have, a Zorki 6 which is very similar but loads from the back. I thought the world of it when I was a teenager in the '60's, and imagined I was using a Leica (I had a vivid imagination then). But being realistic, the lack of low speeds is a major hindrance. Mine also had a strange habit of ripping the film sprockets up, the tension in the drive must have been out of kilter. Also the viewfinder leaves a lot to be desired, and the Industar 50 is only marginally better than the lens in a Diana.