The Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens is a powerful zoom lens at an affordable price for those new to Canon DSLR cameras.
A perfect match for one of Canon's consumer line of Digital Rebel DSLR cameras, the company's EF-S 55-250mm lens has the power to bring distant subjects close, plus on the wide end, the 55mm focal length is makes this lens good for many situations. One word of caution, don't confuse the EF-S series lenses with Canon's L-series in terms of performance and durability -- you get what you pay for and it is unfair to compare the consumer line of lenses with the company's professional line.
According to Canon:
This telephoto zoom lens is designed with Canon's Optical Image Stabilizer technology while retaining compactness and lightness, in response to demands of photographers. This high zoom ratio lens is equivalent to a focal length of 88-400mm in the 35mm format (when used on Canon EOS cameras compatible with EF-S lenses), and the image stabilizer effect equivalent to a shutter speed about 4 stops faster than the same size lens without Image Stabilizer. In other words, if the slowest shutter speed you could formerly hold a 250mm lens steadily was 1/250th of a second, with Canon's 4-stop stabilization correction, you could hand-hold at shutter speeds as slow as 1/15th of a second. It also uses a UD-glass lens element to correct chromatic aberration for excellent image quality throughout the zoom range. This new EF-S telephoto lens with great features delivers excellent performance at an affordable price for all photographers.

