Nikon NIKKOR Z 50mm f/1.8 SA compact, well versed prime, the NIKKOR Z 50mm f 1. 8 S from Nikon offers a normal length field of view along with a bright f 1. 8 maximum aperture. The comfortable perspective pairs with the f 1. 8 design to suit working in difficult lighting conditions as well as offers increased control over depth of field. The optical design includes two aspherical elements and two extra low dispersion elements, which greatly reduce both spherical and chromatic