REVIEW SNAPSHOT®

by PowerReviews
CanonExtender EF 2X III
 
4.4

(based on 455 reviews)

Ratings Distribution

  • 5 Stars

     

    (288)

  • 4 Stars

     

    (117)

  • 3 Stars

     

    (25)

  • 2 Stars

     

    (15)

  • 1 Stars

     

    (10)

93%

of respondents would recommend this to a friend.

Pros

  • Strong construction (201)
  • Easily interchangeable (184)
  • Durable (148)
  • Rugged (120)
  • Consistent output (117)

Cons

  • Poor in low light (75)
  • Slow focus (49)
  • Heavy (29)
  • Blurry focus (14)
  • No increase in performance (3)

Best Uses

  • Wildlife photos (221)
  • Sports/action (130)
  • Landscape/scenery (110)
  • Shooting outdoors (67)
  • Weddings (26)
    • Reviewer Profile:
    • Photo enthusiast (120), Semi-pro photographer (105), Pro photographer (43), Tech savvy (29), Casual photographer (17)
    • Was this a gift?:
    • No (345), Yes (14)

Most Liked Positive Review

 

Nice addition.

I am very surprised with this extender. I am using this on a 5D Mark III with the 70-200 f/2.8 IS II. I read several reviews saying the image wasn't very sharp...Read complete review

I am very surprised with this extender. I am using this on a 5D Mark III with the 70-200 f/2.8 IS II. I read several reviews saying the image wasn't very sharp but I am getting some great results with it (even hand held.) Just remember to double the shutter speed compared to your zoom to get the best results. So if you are shooting at 200mm with the 2x extender you will be at 400mm so your shutter speed will need to be at least 1/800 to get the best results. If you are on a tripod you can get away with a slower shutter but I try to keep it at least equivalent to the lens. I will attach a quick photo I shot from 20ft away at 400mm total and then the cropped version to see all the detail.

The compatibility chart says, "If the EF 70-200mm f/2.8L USM lens is attached to an EOS camera having multiple focusing points and an Extender is attached to the lens, only the center focusing point will be usable for AF". But, to my surprise, ALL of my focus points are working with this lens and the 2x extender. I had to go back and re-read it to make sure I wasn't misunderstanding, but EVERY focus point is working even though it says only the center focus point would be useable. The only drawback I can see so far is the focus is much slower to find it's mark in low light but seems to be great with well lit subjects. So maybe the message is for older cameras?

One other thing I have noticed but haven't had time to do a real test is the depth of field. The loss of light is as it should be by doubling the 2.8 to 5.6 but the depth of field doesn't seem to follow what I expected. Normally if I am shooting a subject at f5.6, I would have a deeper focus area. With the extender, I seem to be getting a really shallow depth of field as if I were still shooting at 2.8. So to get some more usable focus depth I have to stop it down to 7.1 or higher (as you can see in photos below shot at f9). I actually like the really shallow depth I am getting since I mostly shoot artistic shots and modeling but I could see how this would be a problem with sports and such and may be the reason some people are getting some softer results. And again, I haven't had time to completely test this theory.

So, to sum it up. I have had very sharp results with the 2x Extender as long as I keep the shutter at the proper speed. It is a great way to double your compatible lenses (will not work with incompatible lenses because of the way part of it slides into the lens.) And, on my 5D Mark III with the 70-200 2.8 IS II, ALL the focus points are working. I love having a small way to basically have the zoom of a 400 without carrying the extra bulk and the cost. If I were shooting sports or such for a living, I would buy the proper lens. It does lose focus speed relative to the amount of light available and in lower light may not focus at all unless you can find a hard edge to catch.

VS

Most Liked Negative Review

 

Disappointed

I had never tried a 2X before, thinking it might be too good to be true. But with the new series III, I thought it might be OK on a high-quality prime lens. ...Read complete review

I had never tried a 2X before, thinking it might be too good to be true. But with the new series III, I thought it might be OK on a high-quality prime lens. I went out for the day with my 7D and the 2x extender attached to a 500mm f4 IS lens. During the shooting (birds at considerable distance), I revelled in the closer view I was getting. However, back at the computer, I wasn't so happy. I am used to getting crisp feather detail on bird images, having learned good technique over about 5 years of serious practice with wildlife, shooting with Canon gear, most shots using the above 500mm lens with a 1.4X Extender. There was no crisp detail in any of the shots with the 2x. Even with ambitious post-processing from RAW, they were throwaway shots. The best single descriptor I had for the shots was "mush".

To be sure it wasn't just a bad day, I set up a controlled situation indoors. Mounted to a sturdy Gitzo tripod, with mirror locked up, etc., I took photos with just the 500mm lens mounted, then the 1.4X, then the 2.0X, all of the same subjects. Later I compared them on the computer, with the same results I got in the field; the 500mm results were sharp, the 1.4X a little less so but still very good, and the 2.0x result were garbage. Here was the decisive test: I resized the test photos from the 500mm alone by a factor of 2.0 in Photoshop, something no sane photographer would do to achieve a better result. However, the resulting images were sharper than those taken with the 2.0X extender. In short, the 2.0x not only did not provide and benefit, it was actually detrimental. I concluded I would get better results by shooting with the 500mm alone and cropping to fill the frame with the bird. Fortunately, I bought this from B&H rather than from someone on an on-line auction site or a lesser retail company. They took it back in a completely pleasant and business-like manner. Thank you, B&H.

This results still confuses me. The people at Canon are no dummies, so why would they make something that provides no benefit? I have no answer to that. It is just possible that I had a defective unit, so before you use this review alone to make your decision, search for others.

Reviewed by 455 customers

Displaying reviews 1-20

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5.0

Canon Ext EF 2X III

By WpMimaging

from Undisclosed

Comments about Canon Extender EF 2X III:

Great little tool for extending the range of my lenses for wildlife photography especially if you don't want to lug around big telephoto lenses in the deep mountian woods of Pennsylvania as I do.

 
5.0

2x extender

By Jamespic's

from Undisclosed

Comments about Canon Extender EF 2X III:

Awesome for doubling your lens

 
4.0

Great alternative

By Dan

from Undisclosed

Comments about Canon Extender EF 2X III:

If you're like me, you're pinching pennies to get new gear. This is a great alternative to purchasing a new, longer lens. I put it on my 70-200mm f/2.8 and it's amazing so far!

 
5.0

Should have purchased sooner.

By Richie

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Works great with the 70-200 2.8 and the 400 2.8.. I shoot with a 7d M 2 and it get you our far with good quality.

(1 of 1 customers found this review helpful)

 
3.0

Questionable value.

By Terry

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

I have used the extender twice and while image sharpness is good the auto focus capability is not working. I am using the extender on a Canon 100-400 L lense and with the loss of 2 stops of light manual focus is difficult.

(1 of 1 customers found this review helpful)

 
5.0

Better than expected!

By If it flies

from Central Florida, USA

Verified Buyer

Comments about Canon Extender EF 2X III:

I bought this EF 2X III with doubts. I use a Canon 5D3 and EF 600 lens and to do bird/aviation photography. Sometimes I need more reach. I tried the EF 2X II in the past and it was a total disappointment. I have dealt with B&H for years so I purchased the newer extender knowing that if I was not completely satisfied. I could return it. I was very pleasantly surprised!!!! The loss of sharpness with this extender is so small that P/P software was able to restore a very sharp image. Auto focus is good but gets a bit dicey in low light. I have been pleased so far. Great improvement between the II and III versions.

 
5.0

Better than I Imagined!

By Tracy

from Undisclosed

Comments about Canon Extender EF 2X III:

I contemplated for awhile on the 1.4 or 2x. I am so happy I choose the 2x. The IQ is so good. All of my tests proved that the 2x iii and my 70-200L f2.8 iii are a perfect combination. Can't wait to use it at my Grandsons baseball & Tennis games.

 
5.0

Love it

By Kevin

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Gives me the extra teach I need for sporting events

 
5.0

Yes

By Eugene

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Works well

 
5.0

Well worth the money

By Dylan

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

I am big on wildlife photography and was looking at the Canon Extenders for more reach. While the smaller loss of light from the EF 1.4x was more attractive, it wouldn't even give me the focal lengths I needed. Even though you lose more light with this baby, it is well worth the investment. With this on my Canon 70-200mm f/2.8 IS II USM Lens, it works just as intended, if not better. If you are looking at the Canon 100-400mm, get this Extender and the 70-200mm instead. This way, you have a constant max aperture. Oh, and I only buy Canon.

 
4.0

Nice addition to the bag..

By Don

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

I t works.. AF works fine.. great accessory to have, next purchase will be the 1.4...

 
5.0

Excellent Teleconverter

By Rick

from Pasadena, Ca

Verified Buyer

Comments about Canon Extender EF 2X III:

Excellent

(0 of 1 customers found this review helpful)

 
5.0

Fast delivery

By Triin

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Very good and fast delivery.

 
5.0

Great purchase

By Anthony

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Works exceptionally well with Canon 70-200 F2.8 II

(0 of 1 customers found this review helpful)

 
5.0

great extender, no issue with AF

By Janelle

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Excellent addition to my telefoto lenses!

 
5.0

Two in my bag

By Rob

from Maine

Verified Buyer

Comments about Canon Extender EF 2X III:

I carry 2 each of the 2x and 1.4x which I use mostly on a 300mm which gets me to 420 and 600
and
500 which gets me to 700 and 1000
Will not work on autofocus with lenses over f 4.0
Images are still sharp with minor loss

 
5.0

Works as it Should

By Bernard

from Linden, NJ

Verified Buyer

Comments about Canon Extender EF 2X III:

This product is easy to use and of excellent build. Images appear to be sharp.

 
5.0

Works As it Should

By Bernard

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

This product is easy to use and it works as it should. It's of excellent build. Images appear to be sharp.

 
5.0

The best

By Julian

from undisclosed

Verified Buyer

Comments about Canon Extender EF 2X III:

Exelent product i use with my 200mm 2.8L ii and i very happy wiht the results

(2 of 2 customers found this review helpful)

 
5.0

A must for all photographers

By Mrs Ellis

from Undisclosed

Comments about Canon Extender EF 2X III:

Great addition when you can't yet purchase the larger lenses. Beautiful quality and clarity!

Displaying reviews 1-20

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