Ultra-wide Angle of View: Featuring a 185¡ã Ultra-wide Angle of View, this Lens is specially designed for full-frame mirrorless cameras, producing unique perspectives and creative distortions. Its large viewing angle is well-suited for travel, landscapes, panoramas, nighttime scenes, and more. | Aperture F2.8: The bright f/2.8 aperture is designed to suit work in a variety of lighting conditions and also for controlling depth of field and isolating subject matter. | Optical Design: Its optical system consists of 11 elements in 8 groups. A 5-blade diaphragm contributes to a smooth and pleasing bokeh quality. | 0.2m Minimum Focusing Distance: It features an on-body aperture ring that has a close focusing distance of 20cm and weighs around 757.5g. With its super close minimum focus distance, it could help both photo and video enthusiasts create interesting results. | Manual Focus: The aperture ring is stepped with the right amount of resistance, marking full stops from F/2.8 to F/16. The all-metal lens barrel features an engraved depth of field and focuses scales, Additionally, a metal lens mount also offers increased durability between the lens and camera. | Multi-layer Coating: The front lens has a multi-layer coating, to suppress flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions.