The EF-S 18-135mm f/3.5-5.6 IS lens offers the focal range equivalent of a 29-216mm lens in the 35mm format and because it is compact, lightweight and offers a broad focal range, it is an ideal day-to-day lens with wide-angle to full telephoto capabilities. An Image Stabilization system provides the lens with movement compensation for sharper images when shooting in low light and at longer focal lengths. Also included, the EF-S 55-250mm f/4-5.6 IS II lens with an 88-400mm equivalency offers telephoto and super-telephoto zoom capability for close-up portraiture and for bringing distant subjects close. It too utilizes Canon's Image Stabilization technology for blur-free imaging at long focal lengths. Both lenses are designed to match the APS-C-size sensor of the Rebel T3i and feature optics that minimize aberrations. Combined with the Rebel T3i, you're able to shoot high quality photos and Full HD video at almost any shooting distance.