Canon 200-400mm f/4L IS with 1.4x extender

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Canon's EF 200-400mm f/4L IS lens, shown here in prototype form at the Photokina show, includes a built-in 1.4x focal-length extender.

September 18, 2012 1:41 PM PDT

Photo by: Stephen Shankland/CNET

| Caption by: Stephen Shankland

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