77mm Magnetic Lens Filter Kit CPL+ND8+ND64+Magnetic Adapter Ring+Magnetic Lens Cap 5 in 1 Quick Swap System Nano-Xcel Series

SKU: SKU.2143

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The magnetic force will not disappear or weaken. All our magnetic products use neodymium iron boron magnets, which are materials that can maintain constant magnetism. They are the permanent magnets with the strongest magnetic force at room temperature so far. The applicable ambient temperature is 80 below degree. 
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The products fit perfectly, and there is no risk of light leakage. 
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The magnetic force will not disappear or weaken. All our magnetic products use neodymium iron boron magnets, which are materials that can maintain constant magnetism. They are the permanent magnets with the strongest magnetic force at room temperature so far. The applicable ambient temperature is 80 below degree. 
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We have tested with the camera that the filter will not fall off during normal use or swing, unless it is thrown out maliciously. 
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If it is a magnetic filter from K&F CONCEPT, it can be used as long as the caliber is the same. It is not possible if it is a threaded or other brand filter. 
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No, you need a matching magnetic adapter ring to use it. 
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Magnetic adapter 2.1mm, CPL filter 3.5mm, ND filter 3.3mm. 
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There is no need to go up a size. You can use the magnetic lens cap we provide or other lens caps.