77mm Variable ND Filter ND2-ND400 (1-9 Stop) Lens Filter Waterproof Scratch Resistant Nano-Xcel Series

SKU: KF01.1465

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Hi, this is unlimited 1-9 stops variable nd filter, can be adjusted 360 degree, thanks 
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choose a cap that is one size bigger than the filter 
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Hi, this is our Nano-X series filter, with 28 multi-coating, high definition, the largest focal length without vignetting is 16mm, thanks. 
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D series with 24 layer coatings, Nano series with 28 layer coatings 
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Hi, this is unlimited variable nd filter, support 360 degree rotating, thanks. 
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Hi, the variable ND2-ND400 need larger size lens cap than filter , if you order 52mm filter , you need to use 55mm lens cap on it ,thanks. 
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We suggest use the ND1000+ND8 or the ND1000+ND64 for solar eclipse photography. 
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From 1-5 stops, there will be a slight X cross for lens under 24mm. An X cross will appear at the highest stop and can be removed by rotating the filter ring, which is a normal situation instead of a quality issue. 
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Tested with Nikon Z 7 and Nikor 14-30mm Sline, dark corners are not obvious for 14mm and no dark corners for 16mm. 
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As K&F Concept ND2-ND400 filters adjusts the amount of light that can pass through with polarizing glass, a colour cast can't be avoided for all the variable ND filters on the market. However, K&F Concept variable ND filters are made by the best coating technology, which reduces the effect of the polarizing film on image color. *Based on our professional test, the colour cast of K&F Concept ND2-ND400 filters is around 290k while the industry standard is 500k.