Nanotec(R) Coatings repel dirt and moisture , 25 Year Manufacturer Warranty 25 YEARS SUPPORT: We stand behind every X4 DARK CPL filter we make with our 25 Year Ironclad Guarantee. 58mm Camera Lens Filter 82mm QuartzLine ND64/PL 6 Stop Neutral Density And Circular Polarizer Filter Dark CPL Combination Filter WORLDS MOST ADVANCED POLARIZER: The Dark CPL incorporates our X4 CPL film we achieved a gradual transmission decrease from 600nm onward, and instead of spiking uncontrollably near 650nm and far into infrared, the Dark CPL sees very controlled transmission into IR, without the curve spike. Filter Kit MCUV CPL Circular Polarizer Filter - K&F Concept Specs Glass Type - SCHOTT B270 Optical Glass Filter Type - Circular Filter Filter Factor (Light Reduction) - 3 stops, 6 stops, 10 stops Filter Sizes - 49mm, 52mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm, 86mm, 95mm, 105mm, Magnetic FITMENT: This DARK CPL filter is compatible with all camera lenses with front threads between 46mm up to 105mm. 16 MRC layers create a protective layer structurally harder than the glass Every X4 DARK CPL filter has a unique serial number laser engraved onto the interior frame and you will use that number to activate your warranty. It is produced by melting high purity raw materials and then made using the continuous draw process. Breakthrough Photography X4 Dark CPL 3-Stop WORLDS MOST COLOUR NEUTRAL DARK POLARIZER, GUARANTEED: A perfectly flat transmission curve would yield a perfectly colour neutral result, and while there is no such thing as a perfectly neutral CPL filter (contrary to what other filter makers may claim) the X4 CPL is the most colour neutral any CPL filter, guaranteed. A camera polarizer lens can be used to darken skies, suppress glare from water, and manage reflections. A UV protection lens filter blocks ultraviolet light Worlds most colour neutral combination filter
