Samyang 300 mm Mirror F6.3 Lens for Fujifilm X

Mirror lens designed specifically for mirrorless interchangable lens cameras Catadioptric system with Cassegrain design helps to reduce the overall size of the lens while still providing a 35mm-equivalent focal length of 450mm Extra-low dispersion element improves sharpness and clarity as well as helping to eliminate chromatic abberations UMC (Ultra Multi Coated) coating reduces surface reflections, lens flare and ghosting while also contributing to improved overall contrast.