Hoya HD Mk II Protector Filter

This is the ultimate clear filter. It does not affect the color balance or performance of your lenses. With constant use, it protects your valuable lenses from costly damage to the front element caused by dirt, impacts, or scratches. The ultra-clear high-transparency glass has been chemically enhanced and quadruple reinforced. The double-sided 16-layer anti-reflective multi-coating is water and oil repellent, as well as scratch and dirt resistant. The ultra-thin frame is compatible with wide-angle lenses. The glass has been mounted using high-pressure pressing technology.