While the Tokina SZX SUPER TELE 400mm F8 Reflex MF is a super telephoto lens, it boasts a catadioptric optical design and a constant F8 aperture, offering a compact and lightweight alternative to traditional telephoto lenses. This high-quality, durable lens is designed with the active travel photographer in mind, making it ideal for capturing outdoor landscapes, wildlife, and bird photography. The innovative design of this lens allows for a long 400mm focal length, achieved through a unique mirror lens structure. This structure reflects light back and forth between the ends of the lens, effectively halving the tube length and reducing the physical size of the lens to about a third of a conventional lens. This results in a versatile, lightweight body that's easy to carry, making it a reliable choice for photographers on the go. The SZX 400mm F8 Reflex MF lens is designed to work seamlessly with modern mirrorless cameras, offering easy focusing with focus assist functions like focus peaking. The lens also benefits from the in-built multi-axis advanced image stabilization systems of mirrorless cameras, reducing the risk of blurred images due to hand shaking. This lens features multi-layer anti-reflection coating on the lens elements for effective light intake, resulting in faster shutter speeds in low light conditions. The mirrored surfaces of the lens elements incorporate a high-reflectivity silvered coating and a protective antioxidant layer on the back