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Home  >  Lens Converters >  Item # CN2XIII (MFR# 4410B002)
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EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses
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Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses

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Condition: Brand new, USA Warranty
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.

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
Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses

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5 out of 5 stars   I would recommend this product.
By sp (Texas City, TX) November 08, 2013
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: Rugged, Fast / accurate auto-focus, Strong Construction, Nice Bokeh, Easily Interchangeable
Cons: Weak Casing
Other Comments: I have only used it a few times. It has delivered as expected. I just doubled my focal length from 200mm to 400mm.
I recommend this product Yes, I recommend this product
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5 out of 5 stars   It is grate to get so close
By Button (Courtenay B.C Canada) September 10, 2013
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Pros: Durable, Consistent Output, Lightweight, Fast / accurate auto-focus, I Just Love My Extentder, Strong Construction, Easily Interchangeable
Cons:
Other Comments: I just love my exstender with my 60d and 2.8 70 / 200 is 11 lense
I recommend this product Yes, I recommend this product
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4 out of 5 stars   Great product for you right lenses
By Baik (Saudi Arabia) March 26, 2013
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: Lightweight, Easily Interchangeable, Consistent Output, Fast / accurate auto-focus, Durable, Strong Construction
Cons: Poor in Low Light
Other Comments: This extender is very good, easy to use, and durable. It is great to shoot a long distance objects and animals and birds. It's not great in situations where loosing 2 stops is so much. Check the compatibility with your lens(es).
I recommend this product Yes, I recommend this product
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3 out of 5 stars   Need to try it and decide
By Ron (NY) March 26, 2013
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: As Good As A 2x Can Be
Cons: Slow Focus
Other Comments: Buy it after you have bought everything else
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5 out of 5 stars   extender works
By Fitzg (Sacramento) April 19, 2012
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: Fast / accurate auto-focus
Cons:
Other Comments: I plan to use it for sports and wildlife photography. I was surprised how well it helped with macrophotography from a telephoto lens
I recommend this product Yes, I recommend this product
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2 out of 5 stars   Expectation not met
By fm (Buffalo, NY) March 26, 2012
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: Rugged, Strong Construction
Cons: Blurry Focus
Other Comments: Our intention was to pair an EF 2.0X III telephoto extender with our Canon EF 70-200mm f/2.8 L IS USM to create a second 400mm zoom (the other is a Canon EF 100-400mm f/4.5-5.6 L IS USM) so that both spouse and I have comparable capacities for shooting wildlife. The fit, finish, and overall build quality of the extender more than met our expectations, but the IQ did not. Wide open to fully stopped down, we got the same oatmeal-like IQ. Hair and feathers, the attractive bits of most of our subjects, require good resolving power, and the 70-200mm f/2.8 has that power, as does the 100-400mm. But, coupling the 70-200mm with the 2.0X III produces nowhere near the resolution of the 100-400mm. Perhaps our expectations were unrealistic, but we're going to lose some reach but retain far better IQ by staying with the 70-200 mm and the Canon EF 1.4X II.
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4 out of 5 stars   Canon Quality
By rogetw (PDX) March 08, 2012
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros: High build quality, Rugged, Strong Construction
Cons: Poor in Low Light, Slow Focus
Other Comments: Using w/ 100-400mm, sometimes even autofocuses (very slowly) in good light. Suggest using a 3.5 or better lens.
I recommend this product Yes, I recommend this product
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1 out of 5 stars   Auto focus does not work on EF 100-400mm
By Al (Florida) January 23, 2011
Review submitted for Canon EF 2.0X III Telephoto Extender for Canon Super Telephoto Lenses (CN2XIII)
Verified Purchaser
Pros:
Cons:
Other Comments: Auto focus does not work in combination with lens EF 100-400mmf/4.5-5.6L IS USM. Even though the paper from the manufacturer says it does. [...]
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