This lens is our latest offering in a plano-convex lens.  The advanced design combines superior ZEISS supplied glass, the latest ZEISS AR coating, and ZEISS manufacturing technology to provide an exceptionally clean lens.  The advanced ZEISS coating provide a 99.98% light transmission capability and hydrophobic (water hating) qualities.  A separate oleo phobic coating repels fingerprints, grease, dust, and dirt and makes the lens easy to clean.  This advanced coating along with a higher hardness rating combine to provide enhanced durability.