The Samyang 10mm T3.1 ED AS NCS CS VDSLR lens is the cine/video version of the Samyang 10mm T3.1 ED AS NCS CS lens, offering the same excellent optics, but with an integrated gear system for follow-focus systems on video platforms. The Samyang 10mm lenses are ultra wide-angle fixed focal length manual focus lenses designed for APS-C cameras with CS/crop sensors, offering excellent optical quality and exceptional resolution, providing an exceptionally wide field of view of up to 109.5 degrees of rectilinear image. The Samyang 10mm lenses are the first Samyang lenses to feature a brand new Nano Crystal System (NCS) anti-reflection coating. This new coating offers an even lower reflection factor than Samyang's UMC coatings. The NCS coating technology provides a precise process for applying the anti-reflection coating more uniformly over the lens surface. Other benefits offered by the nanocrystalline layer include improved light transmission, increased resistance to flare, resulting in maximum image contrast. Coupled with a T3.1 aperture, considered fast for a wide-angle lens, it offers good low-light capabilities. Like all Samyang lenses, the 10mm is very well built for a lens in its class. The optical construction comprises 14 elements arranged in 10 groups, including 2 AS aspherical lenses and one extra-low dispersion glass element. The Samyang 10mm VDSLR features a built-in fixed lens hood. Although the VDSLR versions were primarily developed for professional cinematography/cinema production, they can also be used for still photography. Samyang's VDSLR versions are rated in T-Stops rather than F-stops, which is customary for cinema camera lenses. The F-stop number expresses the speed of the lens assuming the lens transmits 100% of the incident light. The T number expresses the actual light transmission, which is more accurate and is the standard for professional cinema lenses. Available in 10 camera mounts: Canon EF, Canon-M, Nikon F, Pentax K, Sony A, Sony-E, Four-Thirds, MFT, Samsung NX and Fujifilm X. Technical specifications