The Rokinon 135mm f/2.0 Manual Focus Full Frame Telephoto Lens is a telephoto prime lens thats is ideal for shooting indoor sports and portraits with beautiful soft background blur. 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. The optical design includes one extra-low dispersion lens element to control chromatic aberration and each of its lens elements features Ultra Multi-Coating to improve light transmission and reduce ghosting and flare. Additional features: internal focus system; minimum focus distance of 2.6 feet; durable metal barrel with a wide focus ring; manual aperture control ring; removable lens hood; plus more!