Canon EF 2x lll Extender Lens

The technical details behind this extender
Canon EF 2x lll Extender Lens is great for photojournalists and nature, wildlife, and sports photographers who need to get close to distant and difficult subjects. Ensuring improved optical performance, this extender offers nine optical elements in five groups. All-optical elements have the Canon's Super Spectra coating to reduce ghosting and flare. The Canon EF 2x lll Extender Lens increases the focal length of a lens by a factor of 2x while still providing outstanding image quality. To ensure the finest possible image quality in all shooting situations, it combines redesigned optics, improved data communication between lens and camera, and enhanced environmental protection.
Compatible Lenses:
Fixed focal length L-series lenses 135mm and over
All versions of the EF 70-200mm f/2.8L, EF 70-200mm f/2.8L IS, and EF 70-200mm f/4L
EF 100-400mm f/4.5-5.6L
Key features
2.0x Magnification Factor
EF Mount Teleconverter
Communication Between Lens and Camera
Top three Reasons we think you will love this extender
Microcomputer Controlled
Sealed to be resistant to both water and dust
Features Fluorine Coating