Used Canon EF 1.4x III Extender
Condition & contents
| Grading | Excellent |
|---|---|
| Testing | Fully tested |
| Warranty | 6 Month Warranty |
| Includes | Boxed |
At a glance: Third-generation 1.4x teleconverter for Canon EF L-series telephoto lenses - weather-sealed, 1-stop aperture penalty.
About this lens
The Canon EF 1.4x III Extender is a third-generation teleconverter that multiplies the focal length of compatible Canon EF L-series telephoto and super-telephoto lenses by 1.4x. Released in 2010, it includes redesigned optics, upgraded coatings, and dust/water-resistant sealing over the Mark II.
Build & handling
| Magnification | 1.4x focal length |
|---|---|
| Aperture loss | 1 stop (e.g. f/4 becomes f/5.6) |
| Weight | 225g |
| Construction | Weather-sealed |
Works with
- Compatible Canon EF L-series telephoto primes and zooms from 70mm upward (70-200mm, 100-400mm, 300mm, 400mm, 500mm, 600mm)
- Canon EF-mount full-frame and APS-C DSLRs
- Canon RF mirrorless via EF-EOS R adapter (with the EF lens mounted in the converter)
Best for
Compatible with most Canon EF L-series telephoto primes and zooms from 70mm upward. Turns a 70-200mm f/2.8 into a 98-280mm f/4 with only a 1-stop aperture penalty — useful reach for wildlife and sports photography without carrying a second lens. Autofocus performance depends on the camera body's AF sensitivity at the resulting maximum aperture.
Frequently asked questions
Can I use it with non-L-series EF lenses?
No - the Mark III extender's protruding front element is designed to fit the rear baffle of compatible Canon L-series telephoto lenses. Using it with a standard EF lens may cause optical or physical contact issues.
Will it work on Canon RF mirrorless bodies?
Yes, via the Canon EF-EOS R adapter. Autofocus and IS are preserved, and the lens functions normally on R, R5, R6, R7, R8, R50 and other RF bodies.
Specifications
| Condition | Used |
|---|---|
| Brand | Canon |