This is probably the only one of these I’ll ever get my hands on since they are only making 100 units of it but it sure is a unique lens. The Mitakon Speedmaster 135mm f/1.4 lens features a clickless aperture and a long-throw focus ring around the massive barrel. It uses 105mm filters.
Weighing in a 6.6lbs, it is a bear to shoot handheld.
It has an incredible 11-blade aperture, which you can see stopped down a bit above.
The background separation when wide open is impressive. A focus confirm chip inside helps with manually focusing through the viewfinder.
It is available as a pre-order in Canon, Nikon and Sony FE moutns with a $500 deposit over on the Zyoptics website. The final price is $2,999 with expected availability in early 2016.