New Tamron patent discloses the design of new 28-400mm, 50-500mm and 100-400mm lenses
the design of the 50-500mm lens Tamron is busy patenting the design of new superzooms: 28-400mm f/3. 5-6. 3 50-500mm f/4. 5-8. 0 100-400mm f/5. . 6-8. 0 (inner zoom) Those are all Full Frame lenses said to be focusing on keeping weight and size down. sonyalpharumors.com »