Roger over at has taken some time to test a variety of Canon 400mm lenses, including the new EF 200-400 f/4L IS 1.4x.

Roger's initial take…
“I can’t say whether it’s worth the price or not, but I can certainly say it’s the sharpest zoom lens I’ve ever seen, with image quality rivaling the most expensive primes.”

He did note however, that the 200-400 is a bit shorter at the long end than the EF 400 f/2.8L IS II. They've come to the initial conclusion that it's about 95% of the 400 2.8 primes focal length.

200400imatest1 - Tests the EF 200-400 f/4L IS 1.4x
IMATEST Results for Canon 400mm Lenses

Read the post at

Canon EF 200-400 f/4L IS 1.4x $11,799


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