Canon officially announced the RF 400mm f/2.8L IS USM and RF 600mm f/4L IS USM
Canon has officially announced the first professional super-telephoto lenses with the RF 400mm f/2. 8L IS USM and RF 600mm f/4L IS USM. Both of these Read more. . . The post Canon officially announced the RF 400mm f/2. canonrumors.com »