Sigma 135mm f/1.8 DG ART review (best lens tested so far by photozone.de)
Sigma 135mm f/1.8 Art: At a glance: EF-Mount Lens/Full-Frame Format Aperture Range: f/1.8 to f/16 Two FLD Elements, Two SLD Elements Super Multi-Layer Coating Hyper Sonic AF Motor, Manual Override…