The XF50mm F2 R WR is a mid-telephoto lens with a focal length equivalent to 76mm. Its compact & lightweight design features 9 elements in 7 groups, including one aspherical ED lens, & has an inner focusing system, driven by a stepping motor for fast & silent autofocusing. Metal parts are used extensively on the exterior for a stylish, robust design with a premium feel, while the aperture & focusing rings have been designed to be comfortable & easy to use. The lens is also weather & dust resistant, & operates in temperatures as low as -10C, making it ideal for shooting in a variety of conditions. An AF system that moves smaller lens elements in the middle or at the back of the lens to focus. The lens features 9 lens elements in 7 groups including one aspherical ED lens, which prevents spherical & chromatic aberrations. This ensures the lens delivers outstanding results & minimises variances in image quality at different shooting distances. Compact, lightweight & stylish design The lens weighs just 200g. The metal exterior uses the same design style as XF35mm F2 R WR & XF23mm F2 R WR for a robust, premium feel. The compact & stylish design almost completely eliminates mechanical vignetting when using the optical viewfinder on the FUJIFILM X-Pro 2 camera. The aperture & focusing rings feature precise click stops & smooth damping for easy operation. Fast & silent autofocus The inner focusing AF system uses a stepping motor to drive lightweight focusing elements for a fast, silent autofocus performance. Weather & dust resistant, capable of operating in temperatures as low as -10C The lens is weather-sealed at ten points around the barrel making it weather & dust resistant. It will also continue to operate in temperatures as low as -10C. Used with the weather & dust-resistant FUJIFILM X-Pro 2 or X-T2 bodies means users can shoot confidently in light rain or dusty environments..