67mm Magnetic Lens Filter Kit MCUV + CPL + ND1000 + Adapter Ring

SKU: SKU.1624

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No, the ND filter from the magnetic set is an ND1000 (increases the shutter speed by a factor of 1000). However, it would also be technically difficult to implement a magnetic, yet adjustable, ND filter. 
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Hello, there is a magnetic adapter ring included. If the MCUV filter is not required, the magnetic adapter ring can be used to attract the CPL or ND1000 filter directly. 
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Hi, the K&F Concept magnetic filter set can compatible with Kase , but also you can try it on Freewell system, thanks 
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For a polarising filter to be effective you need to be on a 90 degree angle from the sun. 
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If you mean the cpl and nd in this kit, yes, it can be stacked up. but if you mean your own other filters, it needs to be a magnetic filter.