The Canon Extender EF 1.4x III Teleconverter is a high-quality accessory designed for Canon EF mount lenses. Made with durable plastic materials and a sleek design, this teleconverter increases the focal length by 1.4x for a fixed prime lens, allowing for versatile shooting capabilities. With auto focus functionality and compatibility with Canon EF series lenses, this teleconverter is a reliable choice for photographers looking to expand their creative options. Made in Japan by the renowned brand Canon, this teleconverter is a top-notch product for any photography enthusiast.