The Canon EF-S 18-135mm f/3.5-5.6 IS STM Lens is a standard zoom lens compatible with Canon EF-S mount cameras. It has a maximum aperture of f/3.5-5.6 and a focal length range of 18-135mm, making it suitable for a variety of photography needs. The lens features both auto and manual focus, and is part of the Canon EF-S series.