This set of 10 Summicron-C lenses from Leica are part of the C.W. Sonderoptic line of cinema-style lenses with focus scales marked in feet. The set includes an 18, 21, 25, 29, 35, 40, 50, 65, 75, and 100mm. The lenses feature a maximum aperture of T1.4 and use focus cam technology for precision and low maintenance requirements. Each lens is matched to the other lenses in the series in sharpness and color rendition for consistent color and contrast when intercutting between the different lenses.