Canon Extender EF 1.4X III Lens

Canon Extender EF 1.4X III Lens
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Take your photography further than ever before with this Canon EF III extender lens. It increases the focal length of your DSLR camera lens by a factor of up to 1.4X, meaning you can shoot from further distances without having to sacrifice quality. From Canon.

  • Includes Extender EF 1.4X III lens, extender cap, rear dust cap, lens case, and manual
  • Compatible with fixed focal length L-series lenses 135mm and over, EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L
  • 1.4X magnification factor
  • Seven lens elements in three groups
  • Built-in microcomputer
  • Fluorine coating
  • Measures approximately 2-3/4"Diam x 1-1/8"L
  • 1-year Limited Manufacturer's Warranty
  • Imported

Delivery Date Estimate

Reviews & Community QA

Canon Extender EF 1.4X III Lens is rated 2.6 out of 5 by 5.
Rated 1 out of 5 by from wrong tool Auto focus will not work with Canon 70D and Canon100-400 f.4-f.56 - f stop loss is too much for it to handle. Would have been nice to know requirements before purchase. I have returned for refund.
Date published: 2018-06-10
Rated 4 out of 5 by from Very Pleased I purchased this extender to use with my EF 70-200mm f 4 L USM which I use with a Canon EOS T5i 700D. I would have given 5 stars however nothing is perfect. My primary use is for nature photography. I have had no problems with autofocus or sharpness.
Date published: 2018-01-26
Rated 4 out of 5 by from For that extra reach! While there's much flack about the sharpness of extenders, even the EF 1.4x III, I'd say they were right. But wait!! I saw the same issue when attaching this extender to my 70-200 2.8 L II—slightly back focused on my 1DX2. The fix is to make AF microadjustments on the camera body to calibrate for AF focus. After fine tuning the adjustments, now razor sharp on both W-T and the AF servo focus is fast. Totally surprised how many photographers are unaware of this critical and necessary AF microadjustment. However, be forewarned, camera menu AF microadjustments are typically not available on Canon consumer type DSLRs. The weather sealing is great, and guess what? This teleconverter also works on my 120-300mm 2.8 zoom too.
Date published: 2017-04-18
Rated 2 out of 5 by from Does not live up to expectations I do not recommend this extender as it impacts sharpness. In numerous tests, this extender reduced the sharpness of my EF 70-200mm f/2.8L IS II USM from what I would describe as tack-sharp to "soft". There is no sense in having a 1.4 boost in focal length if the picture is not sharp.
Date published: 2017-02-22
Rated 2 out of 5 by from Disapointed in Canon's product registration I love the product, but canonusa.com registration process does not even allow the user to view the serial number and purchase date information that one previously entered. This is very frustrating when doing things like providing information for insurance coverage or opening a support ticket. Fix the registration process, and I'll rate on just the product and raise it up a lot.
Date published: 2016-07-30
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