Canon Extender EF 2X III is a teleconverter for use with compatible Canon EF Mount lenses and cameras and provides 2.0X magnification, which means when attached to a compatible lens, the apparent focal range of your lens will be increased 2.0X times. At the same time, this teleconverter reduces the aperture value of the attached lens by 2.0 stops.
Canon Extender EF 2X III for EF-Mount Main Features
- EF Mount Teleconverter
- 2.0x Magnification Factor
- Microcomputer Controlled
- Communication Between Lens & Camera
- Spectra Coating Reduces Ghosting/ Flare
- Protective Fluorine Coating
- Dust and Water Resistant
- Compatible with Select EF Mount Lenses
Optical Design
The optical construction of the Canon Extender EF 2X III consists of 9 Elements in 5 Groups.
Physical Specs
The Canon Extender EF 2X III weighs 325.0g / 11.50oz . It has a diameter of 72.0mm / 2.80 inch and a length of 52.70mm / 20.75 inch.
Lenses that are Compatible with Canon Extender EF 2X III for EF-Mount
Currently there are 25 lenses that are compatible with the Canon Extender EF 2X III for EF-Mount. Please be mindful that trying to use a teleconverter with an unsupported
lens may result in damage on the lens and the teleconverter itself.
Here is table of how the effective focal length and aperture of these lenses change when used with the Canon Extender EF 2X III.
Effective Focal Range and Aperture with Canon Extender EF 2X III
Other Teleconverters in Canon EF Mount
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