"The 135mm f/2.0 ED UMC Lens from Rokinon is a manual focus telephoto prime lens useful for portraiture and most telephoto applications. Its fast f/2.0 maximum aperture is effective in low light and enables shallow depth of field control. With a rounded 9-blade diaphragm, shallow depth of field imaging will be rendered with pleasing out-of-focus highlights. Compatible with both full frame and APS-C format mirrorless E mount cameras, this lens provides a 35mm focal length equivalence of 202.5mm when used on APS-C cameras. Its minimum focus distance is 2.6'. The optical design includes one extra-low dispersion lens element to control chromatic aberration, contributing to sharp, color-accurate imaging, and each of its lens elements features Ultra Multi-Coating to improve light transmission and reduce ghosting and flare. An internal focus system prevents the front end from rotating which allows more effective use of variable filters. A durable metal barrel with a wide focus ring and manual aperture control ring offer tactile control over focus and exposure. An included, removable lens hood deters stray light from entering the lens, while protecting it from accidental impact and precipitation.|Manual focus prime lens for portraiture and general telephoto applications|Bright F2.0 aperture: F2.0 aperture creates fantastic image with shallow depth and smooth focus gear ring allows precise adjustment.|Extra low dispersion lens (ED): The extra low dispersion lens reduces chromatic aberration effectively to produce excellent image quality|Circular aperture with 9 blades: 9 aperture blades create almost a full circle when closed and express ray beautifully as starlight.|Ultra Multi Coating (UMC): uses UMC technology to reduce flare and ghost as much as possible and get clear and fresh color image.|Floating type design: It maximizes the resolution by securing as much light as possible and minimizingspherical aberration and distortion.|Non-rotating filter mount|Removable lens hood"