Sony E Mount Lens, T2.9 to T22 Aperture, 122° Angle of View, Low Distortion, Covers Full Frame/VistaVision/ALEXA LF, 7" Close Focus, 0.8 MOD Cine Gears, 114mm Step-Up Ring for Matte Boxes, 16 Elements in 10 Groups, 7-Blade Iris, 102° Front Diameter The Sony E mount Laowa 12mm T2.9 Zero-D Cine Lens from Venus Optics provides a wide 122? angle of view well suited for outdoor and landscape shots and in tight interior locations and it is optimized for digital cinematography. It is so lightweight and compact that it can be used not only with handheld shooting it is also light enough for use on gimbals. The lens produces an image circle that will cover full-frame VistaVision and ARRI ALEXA LF sized sensors or smaller. The 12mm cine lens features a maximum aperture of T2.9 with 16 elements in 10 groups. Its 7-blade aperture provides a soft pleasing bokeh a shallow depth of field with little to no distortion and a 7 close focus distance. The focus and aperture rings feature industry-standard 0.8 pitch gearing that will accommodate standard cine follow focus motors. The 102mm front diameter can be stepped up to 114mm with the included adapter to fit industry-standard matte boxes to prevent glare and reflection as well as to add filters. Focus aperture and depth of field markings are in feet on the side of the lens to aid focus pullers. In addition to the 114mm step-up adapter ring a shim set is included for calibration and a hard-shell Pelican case with custom foam is included to protect and transport the lens.