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Canon EF 1.4X II Extender Telephoto Accessory
- 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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|Included Components||Caps, Pouch|
|Package Height||3.8 x 3.9 x 4.4 inches|
|Shipping Weight||0.7 pounds|
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.
Top Customer Reviews
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.Read more ›
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.
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.
Most Recent Customer Reviews
Had one to use with my 200mm f2.8. Sold the extender to a friend. Just didn't use it.Published 4 months ago by HobbyHubby
I purchased this extender for my 70-200mm F4 IS USM Canon telephoto lens. I read the reviews by other purchasers and couldn't justify both retail price or the III model based on... Read morePublished 8 months ago by Thomas N. Gilmore
Purchased used. Work great. There is sone loss of sharpness in images under intense magnification, but that is to be expected. No complaints.Published 12 months ago by Jim Delaney
I'm very happy with this extender to bring me a little more reach without breaking the bank. After reading about the difference between the II series and III series, I decided... Read morePublished 13 months ago by robobarr
The ii version, used, it's a great deal. Image quality was poor at first (over exposed) then I realized my focus screen setting was wrong in my camera. Read morePublished 15 months ago by iconicj