Suppressing glare and flare.

A feature of top-rank Zeiss lenses, the exclusive T* (T-star) coatings control internal reflections at the glass-to-air surfaces of the lens elements. This suppresses lens "flare" or "ghosting" that can sap an image of its contrast and punch. The T* coating means 52% less reflection than a standard Carl Zeiss lens -- and a whopping 82% less reflection than a conventional lens. You get notably more natural, more vibrant images.