After a new product image, here are the first leaked specifications of the upcoming Canon…
The Canon RF 400mm and RF 600mm, both announced last week, might not be the only super-telephoto lenses for the RF mount to get released in 2021.
According to a new rumor, at least two more super-telephoto lenses are in development. A Canon RF 400mm f/4 DO IS USM lens might get announced and it could be the smallest and lightest of its kind, with a redesigned optical formula for the RF mount system. A Canon RF 200-500mm f/4L IS USM might also get announced. No more information on this one but it might not have a built-in teleconverter (as the EF 200-400mm f/4L IS USM 1.4x does).
Stay tuned, and stay safe.
Source: Canon Rumors