The Canon 2x Extender III is the latest version of the popular lens extension which doubles the focal length of Canon L series telephoto zoom lenses.

There is no reduction in image quality but there is a reduction of the effective aperture of the lens by two stops.

Techie Stuff
Mount: EF
Focal Length: N/A
F-Stop: N/A
Servo: No
Image Stabilised: No
Weight: 325g