The Tokina SZX 400mm f/8 Reflex MF Lens for Sony E is a 400mm catadioptric optical design super-telephoto lens with a fixed f/8 aperture, which offers a compact alternative to standard telephoto lenses. The SZX 400mm f/8 reflex lens features a T-Mount design, making it easily adaptable to a wide variety of camera systems.  Its lightweight and compact design fits easily inside a pocket or small bag and is suitable for travel, wildlife, and outdoor photography. A minimum focusing distance of 45.27" and magnification of 0.4x can capture small objects, while the 400mm focal length reduces the possibility of casting a shadow on the subject. Manual focus catadioptric optical design telephoto lens with fixed f/8 aperture, which is compatible with select camera focus peaking systems and in-body multi-axis advanced image stabilization systems. Multi-layer anti-reflection coating for efficient light intake and reduced flare, plus high-reflectivity silvered coating and a protective antioxidant layer on the back side of mirrored surfaces for long performance life. A wide focus ring provides a smooth rotation range of 270°. Catadioptric design and construction create a smooth and unusual donut-shaped bokeh.