SIGMA 14mm F1.4 DG DN Art L Mount High Speed AF Wide-Angle Lens for Starscape PhotographyThe SIGMA 14mm F1. 4 DG DN Art is the world's first and only lens that combines an ultra wide angle of 14mm with a maximum aperture of F1. 4. The stars in the sky are a source of inspiration for viewers. On the other hand, the starry sky is a very demanding subject for a wide angle lens, with its numerous tiny point light sources spread over the entire image. Starscape Photography The 14mm F1. 4 DG DN Art is the world's widest F1. 4 single focal