BuyDig offers the Sigma 50mm f/1.4 EX DG HSM Lens for Nikon, model no. 310306, or Canon, model no. 310101, for the in-cart price of $379. Apply coupon code “VMESAVES20″, then checkout via V.me via Visa to drop it to $359. With free shipping, that’s $10 under last week’s mention of both lenses and the lowest total price we could find for either lens by $40. It features a hyper sonic motor for silent, high-speed auto-focus.