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Canon EF 1.4x III Extender

Canon EF 1.4x III Extender
alaAverage 4.8

54 reviews

Nov, 2014

  • No negative mentions yet

alaTest has collected and analyzed 54 reviews from magazines and websites. Reviewers are impressed by the reliability and size. The price and usability also get good feedback.

usability, price, size, reliability

On average, users rate this product 93/100.

Review analysis

(Based on 54 reviews)

Expert Reviews  

User Reviews  

Showing 53 review(s)

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Showing 1 - 53 of 53 Show Reviews: in English | in other languages (1)

Consumer review by: review summary for Canon EF 1.4x III Extender


alaTest has collected and analyzed 49 user reviews of Canon EF 1.4x III Extender from The average user rating for this product is 4.6/5, compared to an average user rating of 4.3/5 for other Lenses & Filters on

usability, price, size, reliability

98% of the reviews on give this product a positive rating.

This summary is based on the product: Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses

Expert review by:

Canon EF 1.4x III Extender


The Canon EF 1.4x III Extender mounts between your Canon EOS Digital SLR and a compatible lens(primarily Canon L Series lenses), extending the focal length of the lens by a noticeable 1.4x.The 1.4x III is a small and light addition to your kit, an only...

Consumer review by:



This works superbly with my 70-200mm L IS f4 lens. Although the lens is now converted into a f5.6 lens it continues to autofocus and perform brilliantly. I used it to take some great pictures (including one of a crow) in my back garden (some 30ft away)...

Great Picture Quality","Works sublimely


Consumer review by:

Excellent product


Canon quality

Durable","Great Features","Great Picture Quality","Lightweight","Simple Controls

Consumer review by:

Seriously a nice accessory to have!


I own a 70-200 mm f4 and found that I needed that extra length in zoom for specific photographs. I decided to purchase this extender and to be honest it did the job. However the aperture is disadvantaged and the lens with the extender needs a great...

Extends very well","Lightweight","Price","Well built quality

Looses aperture","Not well in dark