The Alpha 3515 MC005 is a six-sided, multi-coated, multi-layered, spherical lens element with a bayonet mount for use in camera lenses. The lens element has 6° center-to-edge uniformity that allows for excellent optical performance. It has a high-refractive index (1.465X) and is constructed from a hands-free, low-reflection, anti-reflection surface coating. The element is constructed from special high-performance optical resin, which provides a high level of clarity even at the lowest and highest lenses. Additionally, the design makes it ideal for incorporation in higher-end Prime lenses and other state-of-the-art lens technology.