The Canon FD 100-300mm 5.6 L Lens is a high-quality zoom lens manufactured in the 1980s in Japan. It features a maximum aperture of f/5.6, manual focus, and is designed for Canon FD mount cameras. This lens is part of the Canon "L" series, known for its excellent image quality and durability. With a focal length range of 100-300mm and a compatible filter size of 58mm, this lens is ideal for capturing a wide variety of subjects with precision and clarity.