Canon has been rumored the new lens to be RF 200-500mm f/4L IS USM 1.4x. With the teleconverter engaged, this lens could offer a focal length range of 280-700mm f/5.6L IS USM, perfect for wildlife and sports photography.
However the Canon RF 200-500mm f/4L IS USM lens will not come with a built-in teleconverter as rumored before. The reason for not having built-in teleconverter is that Canon want to make this lens much lighter.
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