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  • Canon EF 1.4X II Extender Telephoto Accessory
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Canon EF 1.4X II Extender Telephoto Accessory

by Canon
| 11 answered questions

List Price: $520.00
Price: $459.99 & FREE Shipping
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  • 1.4x telephoto extender for multiplying focal length of Canon 135mm or longer lenses
  • Fits all 135mm or longer fixed focal length lenses and some 70-200mm telephoto lenses
  • Preserves autofocus on any EOS camera when combined with f/4 or faster lens
  • Weather-resistant construction and improved anti-reflective surfaces in the barrel
  • Measures 2.9 inches in diameter and 1.1 inches long; weighs 7.8 ounces
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Frequently Bought Together

Canon EF 1.4X II Extender Telephoto Accessory + B+W 77mm Kaesemann Circular Polarizer with Multi-Resistant Coating
Price for both: $594.94

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Technical Details

  • Brand Name: Canon
  • Model: 6845A004
  • Lens Type: teleconverter
  • Lens System Special Functions: Tele
  • Focus Type: auto-focus
  See more technical details

Product Details

  • Product Dimensions: 4.4 x 3.8 x 3.7 inches ; 1 pounds
  • Shipping Weight: 2 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B00009R6WL
  • Item model number: 6845A004
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (83 customer reviews)
  • Date first available at Amazon.com: October 20, 2003

Product Description

Amazon.com

Multiply the focal length of your 135mm or longer lens by 1.4x without sacrificing image quality with the Canon EF 1.4x II extender. Optically superb, the lens fits all Canon 135mm fixed focal length lenses (except the 135mm f/2.8 Softfocus lens), along with the EF 70-200mm f/2.8L, 70-200mm f/2.8L, 70-200mm f/4.0L, 70-200mm f/4.0L IS USM, and 100-400mm f/4.5-5.6L IS zoom lenses. In addition, the extender doesn't sacrifice your autofocus on any EOS camera as long as it's combined with a lens having an f/4 or faster maximum aperture (the extender reduces the effective aperture by one f-stop). Best of all, this version maintains the outstanding optics of the earlier incarnation, but adds a weather-resistant construction and improved anti-reflective surfaces in the barrel. The EF 1.4x II extender, which measures 2.9 inches in diameter and 1.1 inches long, weighs 7.8 ounces.

Product Description

The Canon 1.4x (L) Teleconverter EF is for use on Canon EF 'L' series lenses ONLY. It will NOT work with standard Canon EF non-L lenses.

Made of Canon's extra sharp Fluorite glass, the 1.4x Tele-converter will give a 40% increase in magnification to any lens attached to it, at the cost of only one f-stop of light transmission. A 200mm f/4 lens, for example, becomes a 280mm f/5.6 lens with the 1.4x Tele-converter behind it. No correction is required for either focusing or exposure operations, the camera does it all. (some focusing restrictions exist. please see specifications). As an added bonus, minimum focusing distance, for any lens, remains the same and that can really improve macro performance! Comes complete with case and strap.


Customer Questions & Answers

Customer Reviews

I've found no appreciable loss in sharpness from using the 1.4X.
erugifog
I highly recommend it since it does make quite a difference and overall it is a professional and very well developed pice of equipment.
Elias G. Castro
I'm using my new Canon EF 1.4X II teleconverter with my Canon EF 100-400mm f/4.5-5.6 L IS USM Lens - and so far, so good.
John D. Hillmer

Most Helpful Customer Reviews

461 of 466 people found the following review helpful By erugifog on September 27, 2005
The 1.4X II teleconverter is a modest update to Canon's earlier 1.4X TC. The mark II allows this extender to be stacked with another of Canon's extenders (either another 1.4X II or the 2X II) without having to separate the two with an extension tube (although the loss of sharpness from stacking extenders may not be acceptable to you). Otherwise, the quality of the newer 1.4X II is supposed to be very similar to the older model, which I've never owned.

The 1.4X II is a great way to extend the reach of compatible lenses. Note that not every Canon lens is compatible with this extender. The following is from Canon's Web site: "This tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens), and the EF 70-200 f/2.8L, 70-200 f/2.8L IS, 70-200 f/4.0L, and 100-400 f/4.5-5.6L IS zoom lenses."

I use it frequently with my Canon 70-200mm f/2.8L IS, which turns it into a 98-280mm zoom. The extra reach it adds is not tremendous, but it's very welcome when I just need a little more than what the lens alone can give me.

I've found no appreciable loss in sharpness from using the 1.4X. Of course, any extender is going to reduce sharpness to some degree, but with normal examination, I can't distinguish photos taken with the 70-200mm that use the 1.4X from those that don't. The fact that the 70-200mm f/2.8L is a very sharp lens to begin with helps in this department.

Using the 1.4X decreases your lens' widest aperture 'capability' by one stop. With some lenses, that can be more significant than it appears on the surface; when using a non-pro Canon body (such as my 20D) the lens must have a minimum wide-open aperture 'capability' of f/5.6 for autofocus to work. The lens doesn't have to be set at f/5.
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108 of 109 people found the following review helpful By William D. Colburn VINE VOICE on April 12, 2007
I have both the 1.4x and 2x teleconverters from Canon. Neither, despite what people say, produces an image that just as sharp as the original lens. But images through the 2x are noticably bad from even a casual inspection while images through the 1.4x hold up very well. Carefully controlled test shots are the easiest way to really see the problems in this converter. But for the most part the 1.4x won't be a liability in sharpness.

The 1.4x loses one stop of light. So while this does work on a 100mm-400mm f/4.5-5.6 IS L lens, I wouldn't reccommend it. Save this for the 200mm f/2.8 L, and the 300mm f/2.8 IS L, and any bigger primes you have.
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101 of 106 people found the following review helpful By A. Ferguson on April 18, 2006
I have used the 1.4x II extender for over a year. It gives me amazing detail with my 70-200L f/4 lens on a 20D. I use it mostly for wildlife and butterflies. Contrast is good with colors that pop. When shooting on a sunny day the shutter speeds are still quick with the f/5.6 and the background is blurred beautifully. In shade areas and low light a tripod is a must! There hasn't been any sacrifice in subject detail. I can see individual hairs on butterfly bodies even when shooting wide open. This is a great way to get closer without paying a significant amount for a supertelephoto lens.
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41 of 41 people found the following review helpful By 7D Guy on August 7, 2007
I've used the Canon 1.4x tele-extender for about six months with my Rebel XTi and two lenses - a f/4.0 70-200mm (non-IS) and the f/4.0 300mm IS. Most of my shots are of kid soccer and baseball.

For these applications, the 1.4x tele-extender is a great accessory. Because of the extra reach, you can get more frame-filling shots. The loss of image sharpness is minimal and tends to be offset by the fact that you can doing less cropping. Since both lenses are f/4.0, they maintain their autofocus capabilities. If there's any slowdown in focusing speed, it's not obvious.

I took the same equipment on a two week safari in Tanazania. Without the extender I'd have had a much harder time capturing decent wildlife shots. The f/4.0 300mm + 1.4x gave me an effective f/5.6 420mm lens with image stabilization. That was about the minimum for many shots (a leopard with its kill in a tree 120 yards away, for example). Even then, I often wished for more length, but to get it you have to move up to serious telephoto lenses that are much more expensive (and much heavier).

As other reviewers have pointed out, there are many lenses - including Canon lenses - that are not compatible with Canon tele-extenders. Check the list of compatible lenses carefully before you buy. 3rd party teleconverters from Tamron and Kenko are reputedly less finicky, although image quality may not be quite as good.

Many photo equipment reviewers (e.g. Bob Atkins) claim that teleconverters work better with primes than with telephotos. That may account for the complaints about the 1.4x with the Canon 100-400mm telephoto. It works fine with my 70-200mm, but that's generally thought to be a sharper lens than the 100-400mm.

Overall, the 1.4x teleconverter is a relatively inexpensive way to extend the range of your Canon telephoto lenses without significant loss of image quality.
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36 of 38 people found the following review helpful By John D. Hillmer VINE VOICE on April 10, 2007
Verified Purchase
I'm using my new Canon EF 1.4X II teleconverter with my Canon EF 100-400mm f/4.5-5.6 L IS USM Lens - and so far, so good. (I've only had it for a few weeks). The 100-400mm will not auto-focus with the 1.4x attached to it. Yes, there are ways to tape 3 pins on the lens or teleconverter to override the unit so that it will try to auto-focus, but I've decided NOT to do that. Canon blocked that for a purpose. I've read that you can over-tax (burn out, though I don't know if that's the actual issue) the USM motor since it will hunt back and forth a lot in low light situations if you tape the pins.. so again, I just decided the 100-400mm was too expensive to try that option. Overall, the quality of the lens combination is still really clear (I'm using it with a Canon 30D). I am getting used to manually focusing this combination, but it really helps to use a monopod or a tripod when shotting with this set at full zoom.
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