Reach the Moon: Overall Concept: Tokina SZ SUPER TELE 500mm F8 Reflex MF is a 500mm super tele lens that adopts a catadioptric type optical design with a constant F8 aperture. The lens of/ers a compact alternative to standard tele photo lenses as more and more photographers are looking for easy-to-carry gear. Keeping in mind active travel photographers that seek outdoor landscape, wild nature or birds, the 500mm F8 Reflex MF is designed as a compact and lightweight mirror lens - a type of lens to be rediscovered in this ne.w era of also compact but high-tech mirrorless cameras. The Tokina SZ SUPER TELE 500mm F8 Reflex MF adopts a T-mount standard (pitch 0.75mm, thread 42mm) that allows the lens to be attached to any camera by using mount adapters. Tokina SZ SUPER TELE 500mm F8 Reflex MF is suitable for travel photography since the lens is compact and lightweight, and yet will help you to capture far objects that cannot be reached by standard zoom lenses. This lens can serve you best in different photographic genres, like landscape, people, street snap, macro, wild nature and even sports Optical Design: Long 500mm focal length of Tokina SZ SUPER TELE 500mm F8 Reflex MF while being such a compact and lightweight is realized thanks to catadioptric optical design. Mirror lenses are tele photo lenses that incorporate a combination of lenses and mirrors to reflect light back and forth between the ends of the lens. This structure folds the light cutting the tube length in half. In this way the construction makes the physical size of the lens around a third of the size of a conventional lens and allows a lightweight body, because the mirrors are much lighter than the optical glass. Rediscovering Reflex Lens with Mirrorless Cameras: Reflex type of lenses are used to be considered as out of fashion, inconvenient gear due to fixed aperture, manual focusing and absence of image stabilization. We suggest to rediscover all advantages of reflex type lenses again, by using it with contemporary mirrorless cameras. Easy to focus: Focus assist functions like focus peaking will help to find the sharpest focus point. Less shaking: In-build multi-axis advanced image stabilization systems of mirrorless cameras will make you forget about blurred images due to hand shaking. No slow shutter any more: ne.west mirrorless cameras featuring advanced wide ISO settings can of/er the photographer to choose a faster shutter speed with minimum pixel noises on the image. Main Features: Compact and lightweight: The outside barrel of the Tokina SZ SUPER TELE 500mm F8 Reflex MF is shaved thinner by using a ne.w processing technology that makes this lens more lightweight compared to the lens with a shorter focal length. Featuring super tele 500mm focal length and weighting only 310g (without mount adapter) the Tokina SZ SUPER TELE 500mm F8 Reflex MF can be easily carried inside a pocket or small bag. For travel photographers who tend to seek for lightweight gear this feature is highly valuable. Optics: Lens elements inside the lens are coated with multi-layer anti-reflection coating for effective light intake and as a result, for increased shutter speed in low light conditions.