The new Samyang 14mm VDSLR (Video Digital SLR) version has been developed primarily for cinema/filming and video with Canon, Nikon, Pentax, Sony A and E-Mount digital SLRs or professional camcorders with corresponding mounts. Like the standard 14mm lens, it features the same superb optics with the addition of de-clicked focus and aperture rings. These modifications allow the user to smoothly and silently adjust focus and aperture/depth of field during filming, and allow coupling with professional follow focus systems. The aperture and focus scale has been moved to the side of the lens to assist videographers. When using the Samyang 14mm on an APS-C DSLR - the field of view still equates to about 22mm (35mm equivalent) which remains impressive. It produces a vast field of view - 114 degrees on full-frame sensors, 93.9˚ (Nikon APS-C with 1.5x crop factor), or 89.9˚ with Canon EOS (1.6x crop factor) The Samyang 14mm T3.5 IF ED UMC Aspherical lens offers high build quality, with a built-in petal-shaped lens hood to help protect the lens from light sources behind the camera. The Samyang 14mm features geared focus and aperture rings that are smooth and well-damped, and couples with follow focus systems. This provides positive manual focus, particularly suited to filmmakers or professional shoots with DSLRs where manual focus is preferred, allowing focus pulling during video recording. The optical construction includes 14 elements in 12 optical groups with 3 high refractive index elements, 2x ED element, one hybrid aspherical element plus one aspherical glass element. The latest generation of anti-reflective coatings: UMC - Ultra Multi Coated is incorporated to minimise flare and ghosting. The lens is supplied with a special clip-on front cap, rear cap and soft case. Available in Canon EF, Canon M, Sony A, Sony E, Pentax K, Fujifilm X, Samsung NX, Four Thirds, and Panasonic / Olympus Micro Four Thirds MFT. specifications