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  • Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses
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Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses

by Canon
88 customer reviews
| 62 answered questions

Price: $429.00 & FREE Shipping. Details
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • Focal Length & Maximum Aperture Magnification: 1.4x
  • Lens Construction of 7 elements in 3 groups
  • Max. Diameter x Length - 2.8" x 1.1" (72.0mm x 27.2mm)
  • Weight - 7.9 oz (225g)

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12 new from $429.00 9 used from $375.00
Warranty Information: This product comes with a 1 Year warranty
$429.00 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses + Canon EF 100-400mm f/4.5-5.6L IS II USM Lens + B+W 77mm Clear UV Haze with Multi-Resistant Coating (010M)
Price for all three: $2,682.60

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Technical Details


Product Description

Product Description

The Canon Extender EF 1.4x III extends a lenses focal length by a factor of 1.4x. Extender EF 1.4X III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. It features a built-in microcomputer for seamless communication among camera body, lens and extender; features careful lens placement and coatings to minimize ghosting and flare and even has a new Fluorine coating that keeps soiling, smears and fingerprints to a minimum. An integral part of many professional systems, Extender EF 1.4X III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction

From the Manufacturer

Extending a lens's focal length by a factor of 1.4x, the Extender EF 1.4X III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. It features a built-in microcomputer for seamless communication among camera body, lens and extender; features careful lens placement and coatings to minimize ghosting and flare and even has a new Fluorine coating that keeps soiling, smears and fingerprints to a minimum. An integral part of many professional systems, Extender EF 1.4X III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction.

Technical Specifications
  • Focal Length & Maximum Aperture Magnification: 1.4x
  • Lens Construction 7 elements in 3 groups
  • Max. Diameter x Length, Wight 2.8 x 1.1 in, 7.9 oz / 72.0 x 27.2mm, 225g

Product Details

User Manual [91kb PDF]
  • Product Dimensions: 1.1 x 2.8 x 2.8 inches ; 7.8 ounces
  • Shipping Weight: 12.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0040X4PUE
  • Item model number: 4409B002
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (88 customer reviews)
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at Amazon.com: August 26, 2010

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

67 of 69 people found the following review helpful By T. Ellison on April 29, 2013
Verified Purchase
I currently use this on my Canon 70-200 f4 L IS with an EOS 7D. I chose the 70-200 f4 IS over the f2.8 primarily because of IS and the weight. With the teleconverter at f5.6 I can still get good pictures and the IS helps quite a bit.

When used with a 70-200 f4L IS, it gives me an equivalent: 98-280mm and f5.6 - f45 aperture.
When used with the 70-200 F4L IS and an EOS 7D you get approximately: 157-448mm and same aperture.

I'll try to post some picture examples above for the product description because "they" won't let us put links here. :-(

PROS: Extends the length of professional quality Canon L Lenses with little or no noticable degredation in image quality.

COS: Only works with certain Canon and 3rd party lenses. Some of the 3rd party teleconverters such as Sigma and Tamron will work with other lenses that this TC will not because of the protruding element but I just can't beleive they are as good of quality. If you are ONLY using this with the compatible Canon lenses, then get this one definitely.

YOU MUST CHECK THE COMPATABILITY CHART BEFORE PURCHASING THIS SO YOU ARE NOT WASTING YOUR TIME. As of 4/29/13, this is what Canon's website states: Note: This lens 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.
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A starting consideration:
It stands to reason that an extender at a few hundred pounds cannot possibly do anything like the job of a longer lens costing thousands of pounds.
If it did then Canon would soon be out of business!

So exactly what is on offer here and what is not?
A considered and truthful opinion from a professional photographer and his supplier.
Not everyone will be bothered by these professional provisos but everyone should understand the issues before considering purchase as follows:

........................

Firstly the hard facts:

1. This extender loses one stop of light which means that only 1/2 of the normal light from the lens will reach the sensor
2. Only series 1 cameras will only give auto focus at basic f8.0 or wider which means that the slowest lens possible for auto focus will be f5.6
3. Non-series 1 cameras will only give auto focus at basic f5.6 or wider which means that the slowest lens possible for auto focus will be f4.0
4. Both the f4.0 or f5.6 basic apertures with the extender fitted will increasingly be relatively slow to latch on to focus in less than good light

[...] gives in-depth reviews of all lenses and full explanations of the above facts.

...............................................
My professional experience

This extender was bought primarily to extend the use of the 300mm F2.8 and the 70-200mm F.8 lenses. I had previously owned the original version of this extender and then the Mark 2. This Mark 3 continues the improvement although it must be said that differences are slight and you need large images to fully see any real change. All three extenders have real matters of compromise to consider and these apply to this latest model too.
Read more ›
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99 of 106 people found the following review helpful By Amazon Customer on April 1, 2011
Verified Purchase
I am very pleased with my new type III lens extender. It is made for a select group of Canon lenses. Before ordering one for your camera body, consult this list! With my 70-200mm f4L lens this extender works very well. I plan to take this lens set up with me to Alaska this summer. It should have the reach that I need. Keep in mind that with this combination, my lens is now f5.6, one stop slower. I still retain IS and fairly rapid AF. I just don't plan to shoot at late dusk with it. Like my zoom lens, this extender is weather sealed at the connections. The additional cost of this extender for my zoom lens gives me the versatility without the greater cost of purchasing a new 400 or 500mm L series lens. My lens set up now has a length of 7 inches and not much extra weight. Matched with my 40D camera body, I can tote this weight around all day.
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35 of 35 people found the following review helpful By Invertalon on April 3, 2013
Verified Purchase
I upgraded from my 1.4x II to use on my 70-200 f/2.8 II lens and have been impressed with it, minus one optical flaw... At 70mm, it actually shows more CA/fringing than the previous model. However, at 200mm it performs better in that regard with less CA/Fringing. I actually returned the first one Amazon sent to me because I thought it was damaged somehow. The replacement performed exactly the same. I am thinking because these Mark III converters were designed for use with the super-tele's that the optical construction was developed to maximize IQ at those focal lengths. On the wider end, it may not correct these aberrations as well, even though it does offer higher resolution all around (see below).

Sharpness wise, the 1.4x III is better. I compared carefully doing side by side test shots... Tripod, mirror lockup, live-view focus, etc... The 1.4x III always had finer detail and more contrast. It was actually quite noticeable, although not as much in real-world shooting. AF performance is the same (with this lens), but I do like the build quality better. More mounting screws, better switch to release the lens, etc...

I think it was worth the upgrade after seeing the additional resolution it offers. I am very happy with it.
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Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses
This item: Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses
Price: $429.00
Ships from and sold by Amazon.com