For many Leica enthusiasts, the two names “Mandler” and “King of Bokeh” are excellent conversation starters. These two terms brings to mind: Dr. Walter Mandler (1922 – 2005), the legendary optical designer behind close to fifty classic Leica lenses and the “King of Bokeh” a title bestowed to the Summicron 35mm Type IV designed by him and made by Leica from 1979 to 1999.