Sigma’s 18-125 F3.8-5.6 DC OS HSM is a compact, high performance zoom lens for digital SLR cameras. Its light weight package is perfect for those times when you want to lighten your lens load but still require a quality product that will deliver great images. At the wide angle end its perfect for scenic, landscape and group photography. At the long end, it can be used for candid portraits, sports action or great shots at the zoo. Roughly equivalent to a 24 to 200mm lens in the larger format cameras. Two Aspherical glass elements offer correction for distortion & to maintain its compact design, SLD (Special Low Dispersion) glass elements provide optimum color correction & sharpness throughout the entire zoom range, Super Multi-Layer lens coating reduces flare and ghosting and assures high image quality throughout the entire zoom range. This might be all the lens you’ll ever need to take great pictures.