The Fujifilm XF 27mm F2.8 R WR Fujinon Lens is a very compact and lightweight, 41mm equivalent focal length standard wide prime lens for Fujis X series of mirrorless digital cameras. Perfect for high quality everyday photography, the compact size and weight make it a great small lens for travelling with minimal size and weight gear. Featuring a weather-sealed construction, the XF27 incorporates a manual aperture ring for intuitive exposure control, and an 'A' position can also be used for camera-based setting adjustments. Filter size: 39mm The Fujifilm Fujinon XF27mm features one aspherical element to minimise distortion and spherical aberrations. A Super EBC coating has also been applied to control flare and ghosting. A high-torque DC coreless motor is used for quick, accurate, and near-silent autofocus performance, which benefits both photo and video applications. Designed for APS-C-format FUJIFILM X-mount mirrorless cameras the bright f/2.8 maximum aperture benefits working in low-light, with control over depth of field, and helps to keep the overall physical design compact and lightweight - the lens is only 84g. The lens measures less than 1" thick for an ultra-portable, versatile design. The Weather-resistant design prevents dust and moisture from entering the lens for use in a greater array of shooting conditions. A rounded seven-blade aperture design contributes to a pleasing bokeh.