Next Generation Digital Anti-Reflection Multi Coating Specially formulated to reduce the chance or internal reflections created by CCD and CMOS sensors in a digital SLR. REPELLAMAX™ Element Resistant Coating This EXCLUSIVE PROMASTER coating repels moisture, fingerprints, dust, dirt, and grime to retain every ounce of sharpness in your image. Hardened Optical Glass Ultra hardened optical glass resists surface scratching and stands up to the most intensive use. Low Profile Anti-Reflective Frame Ultra thin low profile frame prevents vignetting on super wide digital format lenses. The satin-like smooth finish helps to minimize reflected light. Black Rimmed Glass The outer rim of the filter glass is treated with a special black-ink.