Tokina SZX Super Tele 400mm Reflex MF Telephoto Mirror Micro Four Thirds Manual Interchangeable Product Number 634745 f/8 Lens, Mount, Focus, Mount,

[A telephoto lens that achieves size reduction with a reflective optical system] The SZX SUPER TELE 400mm F8 Reflex MF is a mirror lens that achieves a focal length of 400mm in a compact body. [Ultra-lightweight design weighing just 355g (excluding mount)] While it's not uncommon for telephoto lenses to weigh over 1kg, the SUPER TELE 400mm F8 Reflex MF weighs just 355g! This puts an end to the worry of not wanting to carry a heavy telephoto lens around with you. [Reflective optical system that produces a distinctive "ring bokeh" effect] The lens employs a distinctive reflective optical system that produces a "ring bokeh" effect, with a hole in the center of the blurred area, such as a point light source, resulting in a unique and fantastical image. [Convert to a different mount with the T-Mount Adapter II] Both the lens body and the extender use a T-Mount. They are attached to the camera using a "T-Mount Adapter." If you have cameras with multiple mounts, you can easily switch between them by purchasing a "T-Mount Adapter." (The lens does not have electronic contacts.) Product Specifications: ■Mirror Lens: Focal Length: 400mm / Aperture: F8 (Fixed) / Lens Construction: 2 Groups, 6 Elements / Angle of View: 6°8' (35mm Equivalent) / Filter Diameter: 67mm (Front), 30.5mm (Mount) / Minimum Focusing Distance: Approx. 1.15m / Maximum Magnification Ratio: 1:2.5 / Focusing Method: Manual Focus (Front Lens Extension) / Size: 112 x Φ74mm (Mirrorless Mount), 82 x Φ74mm (SLR Mount) / Weight: 545g (Mirrorless Mount), 500g (SLR Mount)