Leica Summicron-C T2.0 / 18, 25, 35, 50, 75 and 100mm PL Mount (Imperial) 6 Lens Set. Following the overwhelming success of the Leica Summilux-C lenses, the Summicron-C lenses deliver exceptional engineering and unsurpassed craftsmanship to the world of cinematography. The Leica Summicron-C family offers six focal lengths (all T2.0): 18mm, 25mm, 35mm, 50mm, 75mm and 100mm. With the introduction of the Summicron-C lenses, Leica offers a superior lens to the competition at an even lower price.