This product is an EF-S camera lens from Canon with an aperture range from 4.5 to 5.6. The lens has a focal range of between 10mm and 18mm and features a zoom adjustment for ideal focus. A wide-angle lens, it features both auto and manual focusing, has a filter size of 67mm, and measures 7.46 x 7.2 cm. It weighs 240g and is designed for use with Canon's SLR cameras.