B&H has the Sigma 50mm f/1.4 EX DG HSM lens that is compatible with both full frame and APS-C cameras for $349 (reg. $499). The deal includes 4% rewards from B&H. The Sigma 50mm f/1.4 lens is available for Canon, Nikon, Sony, Pentax and Sigma DSLRs. Check it out here at B&H Photo.