Revamped Canon super-telephotos for RF mount

Canon RF 400mm F2.8L IS USM and RF 600mm F4L IS USM are based on EF optics, but gain updated features and handling

Revamped Canon super-telephotos for RF mount
Canon RF 400mm F2.8L IS USM and RF 600mm F4L IS USM are based on EF optics, but gain updated features and handling