SIGMA AF 50mm f1.4 DG ART HSM Leica L-mount

L-Mount Lens/Full-Frame Format Aperture Range: f/1.4 to f/16 Three SLD Elements One Aspherical Element Fast and versatile, the Leica L-mount 50mm f/1.4 DG HSM from Sigma is a normal-length prime designed to achieve high optical performance through the incorporation of both three Special Low Dispersion glass elements and one molded glass aspherical element.