Good News! Canon is going to update two new super telephoto prime lenses in 2018. According to the latest rumors from CR2, one is the EF 600mm f/4 DO IS lens which has already shown on Canon EXPO in late 2015 and the other remains unknown.
Canon has already updated 4 new super telephoto prime lenses “big whites” in last several years, first the EF 300mm f/2.8L IS II & EF 400mm f/2.8L IS II came, followed by the EF 500mm f/4L IS II & EF 600mm f/4L IS II a few months later.
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