The Canon 200mm lens is a popular telephoto lens designed for capturing distant subjects with clarity and detail. It is often used in photography for wildlife, sports, and portraiture, providing a narrow field of view that helps isolate the subject from the background. This lens typically features a fast maximum aperture, allowing for better performance in low-light conditions and creating a pleasing background blur, known as bokeh. Compatible with various Canon camera bodies, it is favored by both amateur and professional photographers for its versatility and image quality.