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Canon Extender EF 1.4x III

Ideal for press, sports and nature photography, this compact extender increases the focal length of Canon L-series telephoto or telephoto zoom lens' by a factor of 1.4x, with higher AF accuracy and improved communication between camera and lens.
  • New Or Secondhand: New
  • Lens is suitable for: Canon EOS Full Frame (EF) Only
  • Fitting: Canon EF Only
  • Lens Type: Converter / Adapter

Product code: 51181 (4960999664828)

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Product Details

Ideal for press, sports and nature photography, this compact extender increases the focal length of Canon L-series telephoto or telephoto zoom lens’ by a factor of 1.4x, with higher AF accuracy and improved communication between camera and lens.

  • 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

Focal length extension for super-telephoto lenses

The Extender EF 1.4x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 1.4x. The extender's design ensures there is no loss of lens performance or image quality.

High-quality construction

Improved anti-reflection materials inside the lens-barrel and a coating around the outer edges of the lens elements reduce flare. Construction is resistant to dust and water, helping to maintain images quality.

Improved communication between lens and camera

A built in microprocessor provides accurate transfer of data from between the lens and camera delivering an improved performance in AF and metering.

Compatible with L-Series telephoto and telephoto zoom lenses

The Extender EF 1.4x III is compatible with most telephoto and telephoto zoom lenses within Canon’s flagship professional L-series range, extending the focal length while only reducing the effective aperture of the lens by one stop.

Note: This converter is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. Additionally, please see the lens and/or camera body manual for full autofocus compatibility information with the Extender EF 1.4X III.

Product Reviews

4.7
based on 873 ratings This score is based on all expert and user reviews that TestFreaks has collected for this product. Reviews and scores are collected from more than 30 countries but only reviews in selected languages are shown below.
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Image quality, Lightweight, Durable, Easy to use, Features
Pricey
Fredmiranda

Bought this unit used for $350 Canadian no tax...... current new price is $489 + tax so about $560 Canadian. I previously had the 2X Extender and was never impressed with the image quality vs just cropping a photo. Sharpness of the 1.4X seems better then the 2X.

The Digital Picture

The Canon EF 1.4x III Extender mounts between your Canon EOS Digital SLR and a compatible lens (primarily Canon L Series lenses), extending the focal length of the lens by a noticeable 1.4x.

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Wex Photo Video

Excellent for bird photography (in good light) in conjunction with 100-400mm IS ii. Not as sharp as the zoom on its own, and definitely not as sharp as a prime, but pretty impresive nevertheless. Seems expensive but much cheaper than buying a longer lens, and a huge weight saving.

WEX

Excellent for bird photography (in good light) in conjunction with 100-400mm IS ii. Not as sharp as the zoom on its own, and definitely not as sharp as a prime, but pretty impresive nevertheless. Seems expensive but much cheaper than buying a longer lens, and a huge weight saving.

Castle Cameras

This extender is great giving me nearly 600mm from my 400mm canon lens, actually 560mm, when used on my full frame camera, or 896mm when used on the Crop sensor, and a lot cheaper than buying the equivalent size lenses. Would recommend

Clifton Cameras
Wex Photo Video

Bought this for wildlife and with my 80D found it no problem to get a focus point quickly. Goes without saying you need good light for it to work it's magic and when you get that i see little if any downgrade in image quality.

WEX

Bought this for wildlife and with my 80D found it no problem to get a focus point quickly. Goes without saying you need good light for it to work it's magic and when you get that i see little if any downgrade in image quality.

Clifton Cameras
Wex Photo Video

I own the Mk II version and read reviews about how much better the Mk III version is. Well I used both - one on a Canon EF70-200 mm and one on a Canon EF100-400 mm lens. I did not notice any difference in image quality or speed of focusing.

WEX

I own the Mk II version and read reviews about how much better the Mk III version is. Well I used both - one on a Canon EF70-200 mm and one on a Canon EF100-400 mm lens. I did not notice any difference in image quality or speed of focusing.

Clifton Cameras

this is great works well and does not add much more weight to the camera

I have only had the extender for a couple of weeks so I'm not really in a position to give a thorough review, however I have taken some photographs of dragonflies and the results are pretty good. I'm using the extender with my Canon 70-200 f2.8 L IS ll USM lens on a 7D Mk 1. I've given the extender a provisional 4 star rating because I've experienced some focus hunting and as of yet I'm not sure if this is due to the extender, in such cases I have resorted to using manual focus. I'm certainly finding the extra bit of focal length very useful so plan to give the extender plenty of use this summer.

The extender gives me the extra reach when photographing wildlife without losing too much in image quality. On a tripod nothing s lost other than 2 stops.

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Delivery Information

Free Delivery on orders over £150Order Before or After 3pm

Extend the reach of your lens without losing image quality

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