Professional High Definition: PHD lens reduces glass flare and ghosting causes by reflections. Special Element Frame: Special matte aluminum satin finish frame reduces reflections and optimized photography. Premium Rimmed Glass: High Quality rimmed glass reduces light reflection around lens edge. Infrared Compatible: For high resolution day and night recording. Compact, Lightweight & Exact Size : So they will beautifully fit on your camera. No Need to use any additional ring adapter. Warranty: Lifetime Warranty