The SIGMA EX DC 10-20mm F4-5.6 Canon EF mount AFMF (HSM) is a versatile zoom lens suitable for Canon cameras. With a maximum aperture of f/4.0-5.6, this lens offers a wide range of focal lengths from 10-20mm, making it ideal for capturing ultra wide-angle shots. Made of plastic, this lens features both auto and manual focus options, catering to photographers with different preferences. Designed by Sigma, this lens is compatible with 77mm filters and is lightweight, making it convenient for on-the-go photography.