Canon Extender EF 1.4X III is a teleconverter for use with compatible Canon EF Mount lenses and cameras and provides 1.4X magnification, which means when attached to a compatible lens, the apparent focal range of your lens will be increased 1.4X times. At the same time, this teleconverter reduces the aperture value of the attached lens by 1.0 stops.
Canon Extender EF 1.4X III for EF-Mount Main Features
- EF Mount Teleconverter
- 1.4x 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
The optical construction of the Canon Extender EF 1.4X III consists of 7 Elements in 3 Groups.
The Canon Extender EF 1.4X III weighs 225.0g / 7.90oz . It has a diameter of 72.0mm / 2.80 inch and a length of 27.20mm / 10.71 inch.
Lenses that are Compatible with Canon Extender EF 1.4X III for EF-Mount
Currently there are 25 lenses that are compatible with the Canon Extender EF 1.4X 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 1.4X III.
Effective Focal Range and Aperture with Canon Extender EF 1.4X III
Other Teleconverters in Canon EF Mount
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