Features: Experience a camera lens that is equipped with super multilayer coating to reduce flare and ghosting. Enjoy the hypersonic motor (HSM) to ensure fast and quiet auto focusing when taking pictures in any circumstance. The lens features a brass-made bayonet mount applied on the surface to reinforce strength for long-term use and enable high accuracy and solidity. The Sigma DC OS HSM Lens for Canon EOS features auto zoom and a focal length of 18 to 250 mm. Aperture of this lens is F/3.5-6.3. Mini aperture is 22. Additional tech characteristics include OS HSM DC. Utilize the functions of this 1.04-ounce Sigma DC digital camera lens as both a hobbyist or professionally in a variety of situations.