The Canon ExtenderEF 1.4X is a teleconverter designed specifically for Canon EF mount cameras. With a maximum aperture of f/1.4, this extender allows photographers to achieve a faster and more precise focus. It is compatible with Canon cameras and lenses, and comes in a sleek lens case for protection and easy storage. Perfect for photographers looking to expand their creative possibilities with a reliable and high-quality teleconverter from a trusted brand like Canon.