SIGMA 50 mm F1.2 DG DN Lightweight Art Lens with HLA Technology (Sony E-Mount)SIGMA's Art line has been offering new possibilities and surprises for expression, and now the SIGMA 50mm F1. 2 DG DN Art is here to break the standards. Elevating photographic mastery beyond conventional limits is the SIGMA 50 mm F1. 2 DG DN Art Lens, Sony E Mount. SIGMA's focus with this lens is on the descriptive power that is perfectly usable from the widest aperture, and on portability that allows the high performance to be demonstrated in any