Canon Extender EF 1.4x III teleconverter, in excellent cosmetic condition. Increases the effective focal length of the lens mounted to it by 1.4x while maintaining complete communication between lens and camera. Canon’s teleconverters are not general purpose: they will work specific lenses only, and autofocus function may vary by lens and camera. Be sure to check compatibility before buying! Clean glass and excellent function. Includes pouch.