Canon EF400mm F4 Do is II USM

● DO lens that realizes clear depiction power and miniaturization.Control the path of light using the diffraction phenomenon. ● A spherical lens with excellent depiction power.The distortion of the photos that occurs in the spherical lens is removed by the optical technology unique to Canon. ● A spherical lens with excellent depiction power.The distortion of the photos that occurs in the spherical lens is removed by the optical technology unique to Canon.