Sigma 50mm DG HSM Art Lens for Leica L Mount Cameras (Black)Sigma 50mm DG HSM Art Lens for Leica L Mount Cameras (Black) is part of the Art line prime lens lineup for full frame cameras in L Mount. These L Mount series lenses have achieved high speed AF and are fully compatible with AF C mode, in camera image stabilization, and in camera aberration correction. The Sigma 50mm F1. 4 DG HSM Art Lens for Sony Cameras is a redesigned version of the iconic 50mm f 1. 4 lens from Sigma, setting a new standard for the