Canon 55-250mm IS II EF-S Lens The EF-S 55-250mm f/4-5.6 IS II Lens from Canon is a compact and lightweight telephoto zoom lens that is specifically designed for EOS DSLR cameras that use the EF-S lens mount with APS-C sized sensor. Combining powerful performance with high image quality, this lens offers the 35mm focal length equivalence of 88-400mm and is ideal for photographers seeking an affordable, versatile autofocus lens for general-purpose telephoto photography. The EF-S 55-250mm f/4-5.6 IS II Lens incorporates Canon's 4-stop compensation Image Stabilizer technology. This allows the use of shutter speeds up to four times slower with no perceptible increase in image blur. A panning detection feature automatically turns off the Image Stabilizer in either the horizontal or vertical direction when following moving subjects. An Ultra-low Dispersion lens element minimizes aberrations and contributes to overall sharp, high contrast imaging. Image Stabilization Image Stabilization extends low light options to previously unavailable levels. Handheld images taken in low light and at long focal lengths will benefit from the 4-stop shutter speed equivalence of the optical image stabilization system. Superior Image Quality One UD (Ultra-low Dispersion) lens element is used to suppress the effects of secondary chromatic aberrations - for crisp, sharp, high-contrast images without fringing throughout the zoom range.