Used Canon Extender EF 1.4x II
Condition & contents
| Grading | Great condition, pictures representative. |
|---|---|
| Testing | Fully tested |
| Warranty | 6 month warranty |
| Includes | Lens/Back Caps |
At a glance: EF 1.4x II teleconverter - extends compatible L-series telephotos by 1.4x, 1-stop loss.
About this lens
The Canon Extender EF 1.4x II is Canon's pre-2010 generation 1.4x teleconverter for compatible L-series telephotos. Multiplies focal length by 1.4x with a one-stop aperture loss - useful for squeezing more reach out of a 70-200, 300mm or 400mm prime.
Build & handling
| Magnification | 1.4x |
|---|---|
| Aperture loss | 1 stop |
| Autofocus | Preserved with compatible lenses |
| Weight | 220g |
| Construction | Metal mount |
Works with
- Canon L-series telephoto lenses only (see Canon compatibility chart)
- Works on Canon EF-mount full-frame and APS-C DSLRs
- Works on Canon RF mirrorless bodies via EF-EOS R adapter (stacked with the converter)
Best for
A well-regarded 1.4x teleconverter - the Mk II generation, predating the 2010 Mk III refresh. Optically capable on most L-series telephotos in its compatibility list. Adds roughly 40% more focal length at the cost of one stop of aperture.
Frequently asked questions
Which lenses is this compatible with?
Only specific Canon L-series telephoto lenses - primarily the 70-200mm f/2.8L IS, 300mm f/2.8L IS, 400mm f/2.8L IS, 500mm f/4L IS, 600mm f/4L IS, and 800mm f/5.6L IS families.
What's the difference between the Mk II and Mk III?
The Mk III (2010) adds weather-sealing, improved optical coatings, and re-optimised correction for current-generation L-series telephotos. The Mk II remains optically capable on the lenses it was originally designed for.
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 |