40.5mm Circular Polarizer Filter Ultra-Slim, Multi Coated

SKU: KF01.1307

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Hi, this is CPL filter , for balancing the color, enhancing color and contrast, this is not ND filter , thanks. 
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hello , the more expensive filter is Nano coating and scratch-resistant. this filter only Multi Coated, it is helping repel water, dust but no scratch-resistant. the 82mm filter for 77mm lens, you need a 77-82 mm filter adapter. 
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hello , the more expensive filter is Nano coating and scratch-resistant. this filter only Multi Coated, it is helping repel water, dust but no scratch-resistant. the 82mm filter for 77mm lens, you need a 77-82 mm filter adapter. 
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Try a different lighting setting. 90° from the sun to darken skies or solar reflections will be effected with a polarizer filter. I’m not sure what the seller means from their reply. 
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Put a rubber band around the filter and rotate the filter. Or: get a filter wrench and rotate. Or: Get a flat rubber jar opening pad and rotate. 
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yes, the lens cap could attach to the cpl filter and stay secure 
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Generally speaking, all filters are able to accept existing lens caps, provided the cap hooks on to the inner threads of the lens. There are always exceptions, so trying it out is the absolute only way to uncover them. TIP: if you own other filters, this one is not much different. TIP 2: this is not a particularly good filter, unless you enjoy a green cast over your images. Happy shooting. 
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the outside thread diameter should be one size bigger than the filter. the outside thread diameter for the 77mm filter and 82mm filter should be 82 and 86. 
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Hi,sorry to hear about the problem you met , we kindly suggest you don't twist the filter too tight , the filter CNC non-slip frame will help you take the filter off lens easily.