DESC: A supremely lightweight lens that offers the more economical f/1.8 aperture(compared to the 50mm f/1.4 D), yet still retains the great advantages of the D distance technology. Ideal for scenery or full-length portraits. Weighs just 0.34 lb, making it great for travel while still offering excellent low light gathering properties. Stops down to f/22 for wonderful control of depth of field. Accepts 52mm filters and the HR-2 lens hood.