This Sigma 23mm f/1.4 is part of Sigma’s Contemporary line, which blends portability and quality for a lens that is more affordable and easier to carry around all day but is also very sharp and fast. While not quite on the level of a Sigma Art lens, Contemporary lenses come very close in terms of optics but are much lighter. This makes the Sigma 23mm f/1.4 DC DN Contemporary a great choice for street photography, candids, events, and environmental portraits. This is an RF-mount, APS-C crop lens and will produce a focal length equivalent of 35mm.