Canon RF 300mm f/2.8L IS USM Lens Coming in 2020
As previously reported, Canon is currently working on a new RF 500mm f/4L IS USM lens, that will be the…
Canon RF 400mm f/2.8L, RF 500mm f/4L, RF 600mm f/4L IS USM Lens Patents
Canon has filed three super telephoto prime lens patents in Japan. These products are the RF 400mm f/2.8L IS USM…
Canon Patent for RF/EF 400mm f/4 DO, 600mm f/4 DO, 800mm f/5.6 DO Lenses
Canon has filed a new lens patent in Japan. The patent application is for 400mm f/4 DO lens, 600mm f/4 DO…
