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Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses
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Purchase options and add-ons
Brand | Canon |
Focal Length Description | 2 |
Lens Type | Telephoto |
Compatible Mountings | Canon EF |
Camera Lens Description | 135 month |
About this item
- Compatible with Select EF Mount Lenses. 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
- 2.0x magnification factor
- 9 elements in 5 groups lens construction
- Spectra coating reduces ghosting/flare
- Dust and water resistant
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FULL 14 DAY SATISFACTION GUARANTEE AND A 90 DAY PARTS AND LABOR WARRANTY. SERIAL #8100003479
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Price | $429.00$429.00 | $839.00$839.00 | $115.00$115.00 | $649.00$649.00 | $11,999.00$11,999.00 | $429.00$429.00 |
Delivery | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tomorrow, Mar 29 | Get it as soon as Thursday, Apr 4 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 | Get it as soon as Tuesday, Apr 2 |
Customer Ratings | ||||||
Picture quality | 4.2 | 5.0 | 4.0 | 4.5 | — | 4.6 |
Auto focus | 3.6 | 4.3 | 3.5 | 4.5 | — | 4.6 |
Value for money | 4.2 | — | — | 4.6 | — | 4.6 |
Sold By | Amazon.com | Minty Gadgets (we track serial numbers) | Weeylite Direct | Amazon.com | Amazon.com | Amazon.com |
lens type | Telephoto | Telephoto | — | Telephoto | Telephoto | Telephoto |
compatible mountings | Canon EF | Canon EF | Canon EF | Canon RF | Canon EF | Canon EF |
lens design | Prime | Prime | Zoom | Zoom | Prime | Prime |
focus type | Auto Focus | Manual Focus | Manual Focus, Auto Focus | Auto Focus | Auto Focus | Auto Focus |
minimum focal length | — | 400 millimeters | 70 millimeters | 100 millimeters | — | — |
fixed focal length | 2 millimeters | 400 millimeters | — | 400 millimeters | 400 millimeters | 30 millimeters |
model name | extender ef | 2526A004 | — | CNRF100400F5 | 3045C002 | 4409B002 |
max aperture | 2 f stop | 5.6 f stop | 2 f stop | 400 millimeters | 2.8 millimeters | 5.6 f stop |
From the manufacturer
Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses
Description:
Designed to extend a lenses focal length by a factor of 2x, the Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. It delivers seamless communication among camera body, lens and extender, and features coatings to minimize ghosting, flare and chromatic aberration. The Fluorine coating resists soiling, smears and fingerprints. Extender EF 2X III meets all necessary standards in terms of rugged, dustproof and water-resistant construction, and should be in every professional's camera bag.
Videos
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Customer Review: Gives you the extra reach you need
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Canon EF 101 - Lens Accessories
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Canon EF 101 - Lens Basics
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Product information
Product Dimensions | 2.09 x 2.83 x 2.83 inches |
---|---|
Item Weight | 11.5 ounces |
ASIN | B0040X4PV8 |
Item model number | 4410B002 |
Customer Reviews |
4.3 out of 5 stars |
Best Sellers Rank | #42 in SLR Camera Lenses |
Is Discontinued By Manufacturer | No |
Date First Available | August 26, 2010 |
Manufacturer | Canon Cameras US |
Country of Origin | Japan |
Warranty & Support
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Product Description
Product Description
The Canon Extender EF 2x III is designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2x III delivers optical performance on par with the finest 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, flare and chromatic aberration, and even has a new Fluorine coating that keeps soiling, smears, fingerprints to a minimum. Extender EF 2x III meets necessary standards in terms of rugged, dustproof and water-resistant construction, and should be in every professional's camera bag.
From the Manufacturer
Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest 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, flare and chromatic aberration, and even has a new Fluorine coating that keeps soiling, smears, fingerprints to a minimum. Extender EF 2X III meets necessary standards in terms of rugged, dustproof and water resistant construction, and should be in every professional's camera bag.
Technical Specifications
- Focal Length & Maximum Aperture Magnification: 2.0x
- Lens Construction 9 elements in 5 groups
- Max. Diameter x Length, Weight 2.8 x 2.1 in, 11.5 oz / 72.0 x 52.7mm, 325g
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, quality and value of the lens extender. For example, they mention that it works fantastic, is built like a tank and that it doubles distance for a fraction of the price. They are also happy with the zoom range, appearance, and sharpness. That said, some complain about the autofocus and image quality.
AI-generated from the text of customer reviews
Customers like the performance of the lens extender. They say it works well with new camera bodies and lenses, and provides excellent results. Some mention that it works in bright light with hardly any loss of functionality. Overall, most are satisfied with the performance and recommend it to others.
"...quality lens, like the 70-200/2.8 IS II, there is hardly any loss of functionality at all...." Read more
"...I use this primarily for bird photography. The 2X works really well with this combination...." Read more
"...AF works flawlessly so long as you had a sufficiently large aperture on the lens you're starting with..." Read more
"...It performed well; however, this extender only works with the "white" lens line which is a bummer...." Read more
Customers are satisfied with the quality of the lens. They mention that it is built like a tank, and feels solid when they first touch it. Some say that it does not focus well in the corners, but is still decent in the center. Overall, most are happy with their purchase and recommend it to others.
"...I'm extremely happy with it, and have to say that on a high quality lens, like the 70-200/2.8 IS II, there is hardly any loss of functionality at all..." Read more
"...IQ takes a hard hit on the corners but is still decent in the center...." Read more
"I mean it's Canon, what else to add? Top quality stuff" Read more
"Great addition for the everyday photographer but has its limitations." Read more
Customers like the value of the camera lens. They say it's an excellent tool to turn your $3, a very workable substitute for costly, heavy long reach lenses, and doubles distance for a fraction of the price. Customers also say it is quality at a price.
"...Overall, I am happy with the results I get and feel it is worth the price for the combination that I use for birding...." Read more
"...are prepared to manually focus on your subjects, this is a very cost effective way to get the long reach for wildlife shots, etc...." Read more
"...I just don't like the extra weight it adds on to the unit.it's a bit pricey too." Read more
"...Like most canon products, it is quality at a price." Read more
Customers like the zoom range of the camera lenses. They say it's nice to double the zoom with their existing lenses, and it'll increase the focal length. Some say the images are super sharp and the extender is the best of all extenders. The lens and the expander are clean and no smudges are present.
"...The lens and the extender are clean and no smudges are present.To avoid vibrations, use a sturdy tripod." Read more
"...than just the 1D. Image quality is very good though and it's nice to double the zoom with my existing lenses." Read more
"This is the best of all extenders, in my opinion the images are super sharp and I'm using a 400mm f5.6L lens on a 7D, it gave me the Total focal..." Read more
"...arrived and the box of the extender is open and the extender is outside its own box, the packaging does not have plastic bubbles to prevent and..." Read more
Customers are satisfied with the appearance of the lens. They mention that it is very well designed and built. Customers are also pleased with the quality of the pictures, saying that it produces very clean and crisp images with lovely clarity and color. They also mention that the teleconverter couples well with their 70-200 lens and that they are pleased with its clarity and detail.
"The photos were beautiful and gave me the range I needed for my bird photography, but I did ultimately return it...." Read more
"...mm IS II 2.8 and, even wide open at 400mm/5.6 I still get very clean and crisp images...." Read more
"...Canon makes very good glass and this is no exception." Read more
"...Excellent compatibility and the lovely clarity and color you expect from your Canon lenses...." Read more
Customers are satisfied with the sharpness of the lens. For example, they mention that the shots are very sharp, and the clarity is good. Some say that the lens has a 2X extender mounted, but the glass is so sharp that it still works great. That said, most are happy with the quality and performance of the product.
"...If you have good light it will produce very good photos. The sharpness is very good considering there is a 2X extender mounted...." Read more
"...of new coating on the glass, this rugged and now very sharp tele didn't disappoint...." Read more
"...It made a significant difference in sharpness. If you have this feature on your camera you should do this for every lens." Read more
"The extender does extremely well and is sharp for shots on a tripod. Where I ran into issues were on action shots and low light shots...." Read more
Customers are dissatisfied with the autofocus of the lens. They mention that it's nearly impossible to use, and the auto focus is a bit slower. Some say that the autofocusing does not work when looking through the viewfinder. They also mention that the lens is not fast enough and that the lack of autofocus makes it difficult to capture photos quickly enough.
"...the autofocus is nearly downright impossible and you may just be better off using full time manual..." Read more
"...One caution, naturally the autofocus is much slower with the 2X attached...." Read more
"...but this will attach to a 180L macro, and it does not effect the minimum focusing distance. I had a 360mm f/7.1 with a 15 inch focus distance...." Read more
"...Another con of this extender is that focusing is made much slower. Again, I knew this before buying the extender, but still find it frustrating...." Read more
Customers have mixed opinions about the image quality of the lens. Some mention that it delivers great image quality with minimal reduction in focus speed, and produces really nice pictures. They also say that the pictures are sharp without any noticeable distortion. However, others say that it suffers too much from image degradation, and creates grainy, noisy, and softer images.
"...If you have good light it will produce very good photos. The sharpness is very good considering there is a 2X extender mounted...." Read more
"...There is some SLIGHT image degradation, to be expected, but it is not noticeable at all unless you are seriously pixel peeping...." Read more
"...In fact, it works surprisingly well and the picture quality is very good...." Read more
"...drags a bit, focus is better, when the image is acquired, closer shots are much better than a distant shots...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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I'm extremely happy with it, and have to say that on a high quality lens, like the 70-200/2.8 IS II, there is hardly any loss of functionality at all. Yes, you do lose two stops, but getting a 400mm F/5.6 is not bad at all, and the 4 stops of the IS on the IS II certainly helps a lot. And these days, with the ability to shoot high ISOs without much noise (such as on the 5D3), it's not an issue getting clear shots at 1/500s or faster during the day.
There is some SLIGHT image degradation, to be expected, but it is not noticeable at all unless you are seriously pixel peeping. Only at 100% crops would you be able to tell the difference, and the gain from the extra focal length far outweighs the slight loss in image quality.
You do also get slower autofocus, again, because of the reduced effective aperture size (less light passing through, so it's harder for your camera to detect focus). The 70-200/2.8 IS II has extremely quick autofocus to begin with, so the reduced speed is not too bad. On slower autofocus lenses (such as if you use this extender for macro work, like on the 180mm F/3.5L Macro), the autofocus is nearly downright impossible and you may just be better off using full time manual focus.
You also won't be able to use all the focus points that you're used to using, since you'll only be able to use the points that respond to f/5.6 or slower with a F/2.8 lens. On the 5D3, this means only the center rectangle of points (about 21 cross type points). The 1DS3 and 1DX give you a bit more focus point options at f/5.6. And on lower end cameras, you may be only able to use your center AF point.
On slower lenses, such as f/4 or slower, you may be limited to manual focus only. That's why I really only recommend using a 2x extender on an f/2.8 lens. On slower lenses, you're better off using a 1.4x extender.
The compact size and relatively light weight of the 2x extender makes it a must-bring any time I bring my 70-200 outdoors. Plus it gives me the flexibility of having either a 70-200/2.8 or a 140-400/5.6 at any time I want.
It's especially great to use for wildlife (especially birds and other animals) and sports, if you're shooting during the day. For anything more serious, or in lower light, you'll need to spring for a 300/2.8 or 400/2.8, which are prohibitively expensive unless you're using it regularly for your full time job.
Back to the way it's built: if you've ever owned an L series lens, you know the tolerances are very tight and that fit and finish is excellent. Indeed, often the easiest way to determine if a Canon professional or prosumer DSLR body has an L lens attached is to grasp the camera and lens in different hands and see if there's any motion or wiggle. If it wiggles, either you've got an old L lens that needs some work or you're using a non L lens. When connecting the teleconverter to my camera (5D Mark III), the teleconverter wiggles, and the lens on the other end of it wiggles with respect to the teleconverter.
In conclusion: great product that solves many problems but lacks the fit and finish of the tools it's designed to function with.
Top reviews from other countries
I use this with an Ef adapter with my Canon M50 and using the sigma 150mm - 600mm. Works well enough.
Reviewed in Canada on October 16, 2023
I use this with an Ef adapter with my Canon M50 and using the sigma 150mm - 600mm. Works well enough.
1. Very easy to fit onto the lens and camera, Felt solid and as if it belonged there.
2. shooting at f5.6 as lost 2 stops (expected) and at various settings.
The quality was, to me, entirely acceptable.
A ood purchase, to be recommended.
Reviewed in the United Kingdom on November 6, 2018
1. Very easy to fit onto the lens and camera, Felt solid and as if it belonged there.
2. shooting at f5.6 as lost 2 stops (expected) and at various settings.
The quality was, to me, entirely acceptable.
A ood purchase, to be recommended.
Yes, you lose two F stops but when I use this with my with 70-200 F2.8, it's unbeatable. AND don't be too concerned about image quality - this combo is as good as Canon's 100-400 zoom and better than Canon's 400mm F5.6.