From inception, the SE was designed to be the most optically advanced Porro prism binocular in the world. A specially designed eyepiece redefines optical clarity and sharpness. High definition BaK4 prisms, super high grade optical glass and Nikons exclusive multilayered lens and prism coatings, in concert with this eyepiece, deliver images that "exceed the theoretical limit of resolution" (According to Better View Desired, the highly regarded source for critical optics evaluation) .