Leica Ultravid 3.5-10x42mm Best known for its German-engineered cameras, binoculars and spotting scopes, Leica is now manufacturing riflescopes in the United States. The Ultravid line of scopes includes 1.75-6x32mm, 3.5-10x42mm and 4.5-14x42mm F (focusing objective lens) models. Features that are worth noting include a one-piece 30mm main tube, brilliant optics, ion-assisted multicoatings and a waterproofing treatment good to a depth of 33 feet.