Canon ES-79 II for 85mm f/1.2 L II USM LED Light and one aspherical element are

and one aspherical element are incorporated into the lens construction to help to control aberrations and distortions for increased clarity and sharpness

A top lens information panel is also incorporated

58mm Snap-On Lens Cap

Optical Construction: 14Element in 10Groups (1 Glass ASP & 1 HYBRID ASP)

and low dispersion elements to control a variety of aberrations and realize a high degree of clarity and sharpness

Canon ES-79 II for 85mm f/1.2 L II USM LED Light and one aspherical element areCanon ES 79II Lens Hood for EF 85mm f 1. 2L, 80 200mm f 2. 8L Lenses Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. Dedicated lens hoods are designed to match the specific focal length of the lens it was designed for.