Abe's of Maine offers the Sigma 50mm f/1.4 EX DG HSM Nikon Lens, model no. 310306, for $499. Coupon code "DEALNEWS15" drops it to $484. With free shipping, that's the lowest total price we could find by $15, although we saw it for $20 less in July. Features include six group, eight element lens construction, 1.7.4x magnification, and more.