The Canon FD f/4.0 is a 300 mm lens suitable for wildlife and sports photography. With an aperture range of f/4-32, the Canon FD f/4.0 allows you to capture bright images, even in low-light conditions. With a construction of 7 elements in 7 groups, this Canon lens reduces aberrations, enabling you to take high-quality photos. With a maximum magnification of 0.11x, this 300 mm lens clicks life-size images of small objects. Moreover, this Canon lens accepts 34 mm filters to protect it from dust and glare.