The the canon ef s 55 250mm f4 56 is stm lens offers a flexible focal range and is the perfect companion for photographers looking to get up close to wildlife and capture the action canons stm technology enables smooth quiet continuous focusing when shooting video and fast accurate af when capturing stills the lens is canons first ef s telephoto zoom lens to feature advanced stm technology alongside a 35 stop optical image stabiliser providing outstanding stills and movie quality throu