Sigma 50mm F1.4 CL DG Contemporary: 375g I-Series Prime, Early Spring 2027

Sigma has confirmed the 50mm F1.4 CL DG Contemporary, an all-metal full-frame prime for L-Mount and Sony E-mount weighing 375g with a 52mm filter thread. It uses a new RDD (Rotary Direct Drive) autofocus motor, a 14-blade rounded diaphragm, and an optical design (9 elements, 6 groups, one FLD and three aspherical) tuned to retain gentle focal-plane softness rather than chase peak sharpness. It sits inside Sigma's I series as the first CL-line lens, with an aperture ring, distance scale, and dust and splash resistance. Launch is early spring 2027; price not announced.