The Tokina 80-400 mm lens model AT AF D is ideal for travel due to its compact size and lightweight. It is 5.37 inches long and 3.11 inches around and weighs 2.25 lbs. The Tokina 80-400 mm lens has a maximum aperture of f/4.5 to f/5.6 and a minimum aperture of f/32 to f/40 to create sharp images. The optical construction of this telephoto lens is 16 elements in 10 groups for great performance, and it works in full frame.