The Moment Tele 58mm Lens gets you closer for tighter, crisper shots without using the digital zoom. Optimized for dual lens devices, the lens helps you achieve approximately 2x optical zoom when mounted over a single-lens camera or wide side of a dual lens and approximately 4x optical zoom when mounted over the iPhone telephoto lens. Made of aerospace-grade metal and the same hand-polished glass used for high-end 4K film lenses, the focal length of this lens makes nailing unique compositions a breeze.