Tokina SZ 300mm f/7.1 Pro Reflex MF CF Lens features a unique catadioptric optical design. Sony E mount, lens is well-suited for travel, wildlife, and outdoor photography. It offers a fixed f/7.1 aperture that is compatible with select camera focus peaking systems and in-body multi-axis image stabilization systems. It has Advanced optical design suppresses chromatic aberrations, lens flare, and ghosting with 270° focus rotation angle allows precise focusing operations with a shallow depth of field. To make your photos stand out and lets you capture what the human eye cannot, for everyday scenery in a dramatic and iconic manner, this telephoto lens also offers distinct doughnut-shaped bokeh rings.