SIGMA LENS 30/1.4 DC HSM NIKON ARTA sophisticated and compact prime, the Sigma 30mm f 1. 4 DC HSM Art is a versatile normal length lens for DX format Nikon F mount cameras. Featuring a bright f 1. 4 maximum aperture, this lens excels in difficult lighting conditions and also affords increased control over depth of field for isolating subjects using selective focus. The optical design incorporates one aspherical element, which helps to reduce distortion and spherical aberrations in