The Canon Extender EF 2x III lens extender is a high-quality teleconverter designed for Canon EF mount cameras. With a maximum aperture of f/12, this lens extender allows for a zoom focus type and is ideal for capturing distant subjects with precision. Made in Japan, this unit is in fantastic condition and has only been used a handful of times ensuring a reliable and great addition to any Canon photographer's gear collection. Changed to Sony do selling all my canon gear
eBay