Canon has filed a new lens patent for RF 400mm f/4 DO lens, 600mm f/4 DO lens, and 800mm f/5.6 lens.
According to hi-lows-note these lenses could be RF mount and designed for the Canon full frame mirrorless camera system a.k.a EOS R series models.
Remember next EOS R series full frame mirrorless cameras rumored to feature IBIS. So this makes sense that RF 400mm f/4 DO, RF 600mm f/4 DO, RF 800mm f/5.6 DO lenses could be made for Canon RF mount. Below are the details of the patent. Continue reading “Patent : Canon RF 400mm f/4 DO, 600mm f/4 DO, 800mm f/5.6 DO Lenses”