canon 9517a002 ef-s 17mm 85mm f/4 .0 -5.6 usm is zoom lens 9517a002
canon 275483 ef-s 17mm 85mm f/4 .0 -5.6 usm is zoom lens 9517a002 compatible with canon eos 20d and digital rebel bodies aspheric element with two aspherical surfaces utilized image stabilization circular aperture design 5x zoom ratio