The Walimex Pro 21mm T1.5 UMC CS - Fujifilm X Fit is a wide-angle manual focus lens designed for Fujifilm X-mount mirrorless cameras. It features a large maximum aperture of T1.5, which allows you to capture images in low-light conditions and achieve a shallow depth of field. The lens has a focal length of 21mm, which is ideal for landscape, architecture, and street photography. The lens is constructed with high-quality glass elements, which help to produce sharp and clear images.