This set of 9 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, 50, 75, and 135mm. The lenses feature a maximum aperture of T2.0 and are relatively small in size and weight compared to faster cine lenses, which makes them ideal for handheld operation as well as stabilized rigs and drones. Each lens is matched to the other lenses in the series in sharpness and color rendition for consistent color and contrast when intercutting between different lenses.
In addition to consistent optical properties, the lenses feature matching physical characteristics. The built-in cine-style geared iris and focus rings are in the same place on each lens relative to the lens mount. This makes for fast lens changes as you don't need to adjust lens accessories when changing lenses. The 95mm front is common to each lens, and this simplifies working with clip-on or rod-mounted matte boxes. The 300° of focus rotation provides the space needed for extremely accurate focus pulls.