Amazon.com : Sigma 30mm f/1.4 EX DC HSM Lens for Canon Digital SLR Cameras : Camera Lenses : Electronics,Sigma 30mm f/1.4 EX DC HSM Lens for Canon Digital SLR Cameras,My Sigma 30mm f/1.4 EX DC Lens Review – Hands On Real World Experience – SonyAlphaLab,30mm F1.4 EX DC HSM / EX DC | Lenses | SIGMA Corporation,Guest Review - Sigma 30mm F1.4 EX DC HSM Lens Canon Mount