The Viltrox AF 135mm f/1.8 LAB FE Lens for Sony E / FE mount is a full frame autofocus lens with fast aperture and beautiful bokeh and impressive low-light performance, perfect for the Sony mirrorless cameras. The 135mm is a preferred telephoto prime lens for portraiture. With excellent sharpness, and autofocus performance the Viltrox AF 135 f1.8 LAB lens uses a VCM focus motor for smooth fast autofocus performance with Sony mirrorless camera systems. The bright f/1.8 maximum aperture is ideal for working under low-light conditions. The lens also features two Fn function buttons, for storing custom settings. A multilayer nano coating helps repel water and dust from the front element. Takes 82 mm front filters. The advanced dust and moisture resistant design and magnesium aluminium alloy structure helps protect the lens and offers excellent reliability and performance. The Viltrox AF 135mm f1.8 LAB FE Lens for Sony E / FE mount also features a manual aperture ring, and a click / click-less switch for aperture control, two custom function buttons, and lens data display. With superb optics, is a great option for Sony portrait photographers taking stills or video. USB-C Port allows for firmware updates.