New Patents: Canon RF 300mm f/2.8 DO & 400mm f/2.8 DO Lenses
Canon recently filed two new diffractive optics lens patents in Japan: 300mm f/2.8 DO & 400mm f/2.8 DO. These two
Continue readingCanon Camera & Lens News, Rumors, Reviews and Deals
Canon recently filed two new diffractive optics lens patents in Japan: 300mm f/2.8 DO & 400mm f/2.8 DO. These two
Continue reading