I have a Contax 11 that was made in the 1930s that the Kiev is a copy of, my dad gave to me as a teenager, and have often thought that the vertical running slatted metal focal plane shutter with a mximum speed of 1250/sec was light years ahead of the Leica of those days, not to mention the longer based rangefinder and the bayonet fitting lenses when the Leica ones were still 39mm screw thread .