Wide Angle Manual Focus Cine Lens for Mirrorless Cameras Rokinon 21mm T1.5 ED AS UMC CS is a wide angle manual focus cine lens for mirrorless cameras with APS-C sensor sizes. It is a compact cine lens to capture the broad world. With broad 21mm angle of view and 3 glass aspherical lenses, it provides an opportunity to experience the depth and breadth of image. Rokinon 21mm T1.5 can be used for various purposes, especially for portraits. Cine Lens Features Rokinon 21mm T1.5 ED AS UMC CS allows more delicate video work with T number marks. The focus gear ring is installed for follow focus system. You may change the aperture quietly and smoothly with the uncoupled aperture gear rings. Also, distance scale and T numbers are marked on both sides of the lens for convenience. Optical Features Rokinon 21mm T1.5 ED AS UMC CS has a low T number (T1.5). You may precisely control the lens when shooting under various exposure environment including relatively dark situations. This lens features 8 glasses in 7 groups including 1 extra low dispersion lens (ED) and 3 glass aspherical lenses (ASP) to offer high resolution throughout the image. Ultra Multi Coating (UMC) of Rokinon is used to optimize the light penetration and minimizes flare and ghost. With such optical construction, it has 0.28m of minimum Focusing Distance to capture the object in a close distance. Hardware Features There are 9 aperture blades designed to be almost as a full circle when aperture is closed which expresses starlike ray clearly and beautifully. The solid frame of the lens is made of high-strength aluminum alloy so you can create trustworthy images. This compact and light-weighted lens is specially designed for mirrorless cameras for portability. Also, detachable petal-shaped lens hood minimizes flare and ghost by sheltering lens from unnecessary lights. Available for 4 mirrorless camera mounts: Sony E, MFT, Fuji-X and Canon M.