Amazon.com : 28mm F1.4 DG HSM/Art for Canon Mount : Electronics,Sigma 28mm F1.4 Art lens now available for pre-order on Canon, Nikon, Sigma and Sony mounts: Digital Photography Review,Sigma 20mm F1.4 DG HSM Art Lens for Canon EF for sale online | eBay,Amazon.com : Sigma 40mm f/1.4-1.4 Fixed Prime 40mm F1.4 DG HSM, Black (Canon Mount) : Electronics,Feature | 28mm F1.4 DG HSM | Art | Lenses | SIGMA Corporation