Sophisticated optical design incorporates one aspherical element only to reduce spherical aberrations of distortion as well as one Supe- ED element and 3 extra-low dispersion elements do control chromatic aberrations and color fringing for notable clarity.
Sophisticated optical design incorporates one aspherical element to reduce spherical aberrations and distortion as well as one Super ED element and three extra-low dispersion elements to control chromatic aberrations and color fringing for notable clarity.