Pair Canon's superbly built EF 85mm f/1.8 lens with your Canon SLR, and it may become your go-to lens. This "prime" or fixed-length lens delivers sharp, detailed images, with lovely background blur. Its large maximum aperture of f/1.8 takes in tons of light, letting you "freeze" moving subjects, even when shooting indoors without a flash. And with Canon's built-in Ultrasonic Motor (USM), you get extremely rapid, accurate autofocus, so you never miss a shot. If you need an ultra-responsive lens that snaps exceptional candids, yet has enough telephoto power to capture action scenes in the mid-distance, you've found it.