This Canon 1910B002 lens is a high-quality USM lens with a maximum aperture of f/2.8. It is compatible with Canon cameras and has a focal length of 16-35mm, making it perfect for a range of photography styles. The lens features auto and manual focus capabilities, and has a weight of 1.4 pounds.The lens is a part of the Canon "L" series, and comes with a mount for Canon EF. It also has a compatible filter size of 82mm. This lens is in excellent shape and is perfect for photographers looking for a reliable and high-performing lens.