Since a telephoto lens makes a subject appear larger on film than does a normal lens at the same camera-to-subject distance, its ability to isolate far subjects with its longer reach greatly benefits people engage in sports and wildlife photography. Even taking a picture of a mountain range becomes easier with a telephoto lens, because of its long focal length. Looking for a great-value telephoto lens can be hard, especially now that a number of top quality manufacturers have released a variety of products to choose from. In the end, though, what people essentially need is one that is affordable and reliable. The perfect choice will then be a Sigma 55-200mm F4-5.6 DC which complements your camera’s kit lens.