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Brand	Canon
Focal Length Description	Attribute not Applicable
Lens Type	Telephoto
Compatible Mountings	Canon EF
Camera Lens Description	7

About this item

Measures 2.8 inches in diameter and 2.3 inches long; weighs 9.3 ounces
Maintains autofocus with any EOD body with f/2.8 or faster aperture
Ideal for shooting close-ups from a distance at sporting events
Telephoto extender designed to double Canon EF lens focal length
Weather-resistant and anti-reflective internal construction
Telephoto extender designed to double Canon EF lens focal length
Ideal for shooting close-ups from a distance at sporting events

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Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses
$429.00
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Compare with similar items

	This Item Canon EF 2X II Extender Telephoto Accessory	Recommendations Canon EF 100-400mm f/4.5-5.6L is II USM Lens, Lens Only	dummy Canon EXT. RF2X(N) (4114C002)	dummy Canon EF 1.4X II Extender Telephoto Accessory	dummy Canon RF800/11 is STM(N)	dummy Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses (Renewed)
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$398.49	$2,399.00	$599.00	$377.99	$999.00	-11% $377.99 New Price: $429.00
Delivery	Get it as soon as Monday, Nov 20	Get it as soon as Friday, Nov 24	Get it as soon as Tuesday, Nov 21	Get it as soon as Monday, Nov 20	Get it as soon as Wednesday, Nov 22	Get it as soon as Monday, Nov 20
Customer Ratings	3.8169	4.7500	4.5105	4.5137	4.5176	4.78
Sold By	Web Offers	Amazon.com	Amazon.com	Web Offers	Amazon.com	6ave
lens type	Telephoto	Telephoto	Standard	Zoom	Telephoto	Telephoto
Picture quality	3.8	4.7	4.3	4.8	4.4	—
Auto focus	2.5	4.7	4.3	4.7	4.0	—
Value for money	3.9	—	3.8	—	4.5	—
Image stabilization	—	4.9	—	4.7	4.7	—
compatible mountings	Canon EF	Canon EF	Canon RF	Canon EF	Canon RF	Canon EF
lens design	—	Zoom	Prime	Prime	Prime	Prime
focus type	Auto Focus	Ultrasonic	Manual Focus	Auto Focus	Auto Focus	Auto Focus
minimum focal length	1 millimeters	100 millimeters	0 millimeters	100 millimeters	—	1 millimeters
max focal length	—	400 millimeters	2 millimeters	135 millimeters	—	1 millimeters
model name	ef,extender ef	9524B002	extender,rf2x	—	CNRF800F11	ef

Product Description

Product description

Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon EF 2.0X III Teleconverter 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.

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Designed to double the focal length of any compatible Canon EF lens, the Canon EF 2x II extender telephoto accessory is ideal for sporting events and nature photography. The lens boasts a new seven-element design, along with the same weather-resistant and anti-reflective internal construction as the companion EF 1.4x II extender. More significantly, the extender supports autofocus with any EOS body provided the lens has an f/2.8 or faster maximum aperture (the EF 2x II reduces effective aperture by two stops). The EF 2x II--which also maintains an EOS camera's Image Stabilization technology--carries a one-year warranty.

Magnification: 2.0x
Lens construction: 7 elements in 5 groups
Dimensions: 2.8 inches in diameter and 2.3 inches long
Weight: 9.3 ounces

What's in the box

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Product information

Product Dimensions

5.3 x 3.8 x 3.5 inches

Item Weight

9.3 ounces

ASIN

B00009XVBY

Item model number

6846A003

Customer Reviews

3.8 169 ratings

3.8 out of 5 stars

Best Sellers Rank

#818 in SLR Camera Lenses

Is Discontinued By Manufacturer

Date First Available

June 17, 2003

Manufacturer

Canon Cameras US

Country of Origin

Japan

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3.8 out of 5

169 global ratings

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It's slower than using just the lens

Reviewed in the United States on June 6, 2023

Verified Purchase

I purchased this to use with a Sigma 150-600mm 5-6.3 Contemporary DG OS HSM Lens for Canon lens with a Canon T8i (it's replacing a generic doubler that just wasn't cutting it). This works A LOT better than the generic one I had, but the auto-focus is still a little slow, but still usable. I've had two opportunities to use it (for outdoor/wildlife photography) and it isn't bad. The picture quality could be a little sharper/clearer, or you could buy a much more expensive lens (for $8,000 plus!). So, for the money this is s decent purchase. I would buy it again, I just wish I had gotten one earlier!

Helpful

Nice addition to have

Reviewed in the United States on June 19, 2013

Verified Purchase

I ordered this to use with my EF 180mm macro lens. It came in a crumpled box which looked liked its been sitting for years in the storage. I am not sure whether I received a used one for a new one. Any ways I did not have time to send it back so started using it . The lense settled at aperture 7 for this. As others mentioned its darker when looking through the view finder and much slower to focus. Good part is I was able to focus on the hose which is across the street from my balcony, in other words you can gate a good picture of an object which is a little far away. I like the back gound blur with this. As it is 180mm lens itself is great for this but this added more. I still have to try this out more.
Obviously it added more weight. You can't use this without a solid tripod.

Update: auto focus is not working when mounted on Canon EF 180mm lens, I removed the extender and mounted the lens and AF is working. I googled and found out the auto focus won't work with this on 50D. Is that true?
Update: 06/23/13: Went to Longwood gardens to test this one, of course it's my favorite place too. Took some shots with EXtender on EF 180mm lens. I am vey happy with the results.
https://www.facebook.com/jay.tad/photos
If you want to see how the pictures look with this combination on Canon 50D you can click on the above link.
I am not sure why Amazon provided link to this, I bought Canon Extender X III so my review is for not Extender XIII.

One person found this helpful

Helpful

J. LEFEVER

Canin 2x extender

Reviewed in the United States on January 9, 2010

Verified Purchase

I used it exclusively on my 1DsmkII with the Canon 70-200mm f/2.8 L IS for my month in Jerusalem - originally it was joined to a 5DmkII with the Canon 180 mm f/3.5 L macro lens - also superb image quality. I was very happy about that.

Only two problems actually (and they are not problems, just restrictions) and that is the loss of stops (on the 2.8 70-200 lens the widest I could open the aperture was 5.6 and on the 3.5 it was a bit smaller) - tough when shooting churches and darker situations, which I do. The other restriction is I could only use it with those two lenses out of my collection. It does not fit with any glass that is flush on the back end, such as the 85mm L 1.2 or the 35mm L 1.4 or the 24-70mm L 2.8, or the 14mm, or the 24mm.... etc. Mainly made for telephotos so no getting creative with it with the medium and short lenses.

I think I would have given it 5 stars if Canon could make it so as to keep the lens f/stop speed at the widest of the lens being used (in my case, 2.8 and 3.5 respectively).

With that said, I thought many times on this trip, that it was a great purchase and I am glad for having made it - loved the extra extension and shooting with a smaller lens at a max 400mm length. I am leaving it configured with my 1DsmkII and the 70-200 zoom. I like the results that much.

Is it less contrasty? less sharp? Well, not pixel peeping here, I am only asking - did I get the shot or not. And with that I can say YES! (many times in an area sensitive to picture taking). I am glad to have it in my lens case.

3 people found this helpful

Helpful

Gary L. Jamerson

Works Perfect with 2.8 70-200

Reviewed in the United States on May 25, 2013

Verified Purchase

Because of the mixed reviews about this extender "Canon EF Ex II" I had to buy it to see for myself. I used my canon 70-200 MK II 2.8 on my 5D Mk II and I have to admit I hate the softness and especially the soft edges not to mention the slow focus. It doesn't come close to the performance we all know and love with this fine quality lens. I decided to pack it up and ship it back to the seller I was so disappointed. I'm sure many will think I did something wrong or expected to much, this isn't the case since many others have testified to the same results. If you're happy that's great, I wasn't.

I decided to at least try it on my Canon 40D which has a 1.6 crop factor which extends the focal length to 640mm and Viola... the quality is absolutely stellar!!! Not only are the images sharp as a tack with images like the 70-200 without extender, and it focuses extremely fast. Needless to say I'm extremely happy and 40D's aren't very expensive, so if you are unhappy with the 2x II and you can afford a 40D that might be an option considering you get a second camera, longer focal length, fabulous images, for less than $400 on average. Just consider the the extra cost like buying two extenders.

Why the four stars? I feel it should work on my 5D MK II with equal results, and it doesn't!

Regards,
Urban Picasso

2 people found this helpful

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Antonio

Arrivato in perfetto orario

Reviewed in Italy on March 14, 2023

Verified Purchase

Quello che cercavo per migliorare e potenziare i miei obiettivi

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turok

Canon 2X Externder EF II

Reviewed in the United Kingdom on April 17, 2011

Verified Purchase

Arrived ahead of expected delivery date and in A+ condition. Good shop.
I bought this for use with my Canon 70-200 f:2.8 and 100-400 lenses (Both L class). The picture quality is very good and does justice to the L class lenses. There is nothing to complain about when used with the 70-200 f:2.8. However, using it with the 100-400 the Auto focusing is much slower, but, surprisingly it works, even though on canon's spec sheet it is stated that autofocus is not supported with this lens. I took some amazing shots of the moon with an effective focal length of 800mm. At this setting there was marginal blue colour fringing, but this could be corrected in RAW. Understandably, manual focus is very delicate with the extender and when the lens is fully zoomed in. I'm very pleased with it.

3 people found this helpful

Benny

Cheap but not good

Reviewed in Canada on January 27, 2019

Verified Purchase

It is manual focus only! It did not mention clearly

2 people found this helpful

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