The Okko Lite Circular Polarising Filters cut-out haze and filter out reflections for sharp and clear photographs. The polarising effect is easily adjusted by spinning the ring on the filter until you get the desired result. Polarised images have more colour saturation and a higher contrast. Built for Out in the Field Each Okko Lite CPL Filter is constructed from AGC Japanese Optical Glass and a slimline filter frames for optimal quality and to assist in avoiding vignetting. The filter will act as an extra barrier of protection for your lens and has been designed so that the standard lens cap will still fit on. All weather sealing protects the front of you lens from the elements. This Okko Lite / CPL Filter has a 67mm thread size.