Sigma has announced the 17-40mm F1.8 DC Art, a super-fast standard zoom for APS-C. It will be available in Leica L, Sony E, Fujifilm X and Canon RF mounts. Sigma 17-40mm F1.8 DC | Art is a super-fast standard zoom… Read moreSigma 17-40mm F1.8 DC Art Lens Announced, Priced $919, Available for Pre-Order