CANON EXTENDER EF 2X III

* Extends the focal length of the lens by a factor of 2 * Excellent imaging performance thanks to the new optical design and optimized AF performance * Even more robust and protected against dust and splash water; ideal for use in difficult conditions * Built-in microchip for effective communication between lens and camera * Optimized coating to minimize flare and reflections * Suitable for many Canon L-series telephoto and telephoto zoom lenses * Fluorine coating to protect against water splashes and fingerprints