5 Year Limited Warranty: Covers defects of any kind in the workmanship and materials of the product. | Unsurpassed Optic Resolution: Our filters are held to the highest optic resolution standards and will not degrade your image when placed in front of a lens. | Flat Wave Overcoat: Optic coating that gives the filter's front surface a "smoother-than-glass" finish, making filter maintenance and care much easier. | White Balanced Multi-Coating - Specially formulated coating process that ensures that there is no color shift when placing the filter in front of a lens. | Hand Crafted and Inspected - Run in small batches, hand crafted, and individually inspected to ensure the utmost in quality.