These are samples from Leitz 90mm f/2 Summicron-R lens and various Pentax digital SLR's. This lens is without doubts Bokeh King.
Leitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-RLeitz 90mm f/2 Summicron-R