Prevent hazy images caused by polarized light reflected from water, snow, glass or water droplets in the atmosphere. The Pro CPL filter eliminates glare and helps you capture rich, clear shots in challenging bright conditions. This fully adjustable filter allows you to control polarization for color saturation and greater contrast. An ultra-slim frame and glass thickness of 2.0mm prevents vignetting. 14 anti- reflective coatings and an optical density of 0.3 allows you to get it right in camera first. Accidents happen, so all Okko Pro filters come with a Lifetime Guarantee. If you break your filter, we replace it.