Canon
EF 2x Extender II
Teleconverter
This teleconverter provides a 2× increase in focal length, and is designed to match Canon's telephoto L Series lenses. The extender Maintains AF operation when used with lenses faster than f/4, and maintains full electronic communication between lens and body. It also features excellent weather resistance, making it suitable for use in heavy rain, as O-ring seals protect mounts and release lever.