EF Extender 2x III reviews: Lens

11 customer reviews
Photo of EF Extender 2X III Lens

This lens is a good all rounder.

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8.5 out of 10 based on 11 reviews.
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Some customer reviews of EF Extender 2x III

Most helpful reviews

Ronald, Montrose

Score 4.0/10
Good points:
Reviewer left no comment
Bad points:
Canon do not make it clear the the autofocus will not work whent the fstop is 8 or above, meaning NO autofocus with most lenses.

This needs to be much clearer in the advertising as it does advertise full autofocus.
Overall rating 4.0
Ease of use 8.0
Image quality 8.0
Build Quality 8.0
Value for money 8.0
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3 of 3 people found this review helpful

Confirmed purchase: 24 Feb 2014

Michael, Bristol Keen amateur photographer

Score 6.0/10
Good points:
Extends the focal length significantly. Much cheaper than buying a 2nd HQ lens.
Bad points:
Dark - f5.6 at best on a 2.8 lens, f8 on anything less fast/open. Less focal sharpness. These really need bright conditions to work reasonably well.
Overall rating 6.0
Ease of use 7.0
Image quality 6.0
Build Quality 7.0
Value for money 5.0
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15 of 15 people found this review helpful

Confirmed purchase: 03 Oct 2011

desmond, Burton Latimer Northants

Score 10.0/10
Good points:
Does what it is meant to do. Exellent build Canon at it's best.
Bad points:
None what so ever.
Overall rating 10.0
Ease of use 10.0
Image quality 10.0
Build Quality 10.0
Value for money 10.0
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Confirmed purchase: 03 Jan 2015


Manufacturer's Description

Ideal for press, sports and nature photography, the extender increases the focal length of Canon L-series telephoto or telephoto zoom lens’ by a factor of 2x, with higher AF accuracy and improved communication between camera and lens


Extends the master lens focal length by 2x
Outstanding image quality
Highly resistant to dust and water
Improved communication between lens and camera
Optimised lens coatings
Compatible with L-Series telephoto and telephoto zoom lenses
Increase your lens’ focal length by 2x without sacrificing image quality

Focal length extension for super-telephoto lenses
The Extender EF 2x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 2×. The extender’s design ensures there is no loss of lens performance or image quality.

High-quality construction
Improved anti-reflection materials inside the lens-barrel and a coating around the outer edges of the lens elements reduce flare. Construction is resistant to dust and water, helping to maintain images quality.

Improved communication between lens and camera
A built in microprocessor provides accurate transfer of data from between the lens and camera delivering an improved performance in AF and metering.

Compatible with L-Series telephoto and telephoto zoom lenses
The Extender EF 2x III is compatible with most telephoto and telephoto zoom lenses within Canon’s flagship professional L-series range, extending the focal length while only reducing the effective aperture of the lens by two stop.

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