Features:Promasters Digital HD line of filters produce clearer images with higher contract by reducting internal flare and reflections that commonly occur in digital SLR cameras.This UV Filter enhances outdoor photos by reducing the effects of atmospheric haze, also serves as a permanent lens protector.Made from ultra high quality SCHOTT optical glassLow-profile, ultra-slim frame prevents vignettingDouble-sided, anti-reflective multi-coating is optimized for digital imaging sensors