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EF 400mm f/2.8L IS III USM & EF 600mm f/4L IS III USM Developers' Interview

December 11, 2018

By: Canon Editor

What is needed in a flagship super telephoto lens? While conducting repeated research, we reaffirmed that a lightweight design is the key to completely changing usability, and a common request among super-telephoto users. Achieving this dramatic lightweight design was a challenge that the entire development team needed to take on.