Canon Extender 2x III teleconverter review

In this review, I do a review of the Canon Extender 2x III teleconverter. I rented this from Lensrentalscanada.com along with a Canon EF 400mm f/5.6L lens and the 1.4x III teleconverter hoping to get some amazing bird photos. After over 1000 shots with the lens alone, the 1.4x and the 2x teleconverters, my sad conclusion is that the lens alone probably gave me the best results.

Sure the 1.4x and 2x teleconverters do zoom in the image by 1.4x and 2x respectively, but they also deteriorate the image quality by a good amount, so taking a photo without the teleconverter and cropping it down usually gave very similar results without many of the inconveniences that comes from using a teleconverter (lost of 1-2 stops of light which sometimes disables autofocus on some lens/camera combinations).

All photos in this video are as-is .jpgs coming right out of the camera with no post-processing. Definitely some post-processing would improve some of these, but I want to show the files as they come, not after spending hours refining a RAW file. I first show the full image, then I zoom in 1:1.

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Jean-Pierre La Forest

Photographer / Videographer at Studio JPIC
Jean-Pierre La Forest is a photographer and videographer based out of Florenceville-Bristol, NB, Canada. JP specializes in commercial and tourism photography and videography, where he helps businesses, artists, and towns to market themselves. He also teaches the art of photography on his YouTube channel and blog. You can reach him on

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