To get a good view of subjects that are at a great distance, you need a zoom lens. Zooming in brings you closer to your subject without moving yourself. For example, you can photograph athletes from the sidelines of the field or wildlife in nature. The greater the distance between you and your subject, the greater the focal length you need. These zoom lenses for Canon cameras are very versatile in use. You can use them for different types of photography. Take a good look at which lens is suitable for your use situation.