Ef s 18 135 mm f35 56 is stm an all purpose 18 135 mm zoom lens with stm technology stm provides smooth quiet auto focusing for movies and dynamic image stabilizer reduces vibrations in video footage features versatile 18 135 mm zoom range perfect for travel smooth quiet stm focusing when shooting movies on compatible cameras dynamic image stabilizer for smooth movie footage fast autofocus with full time manual override minimum focusing distance of 039 m all purpose stm zoom for o