77mm Magnetic Lens Filter Kit MCUV + CPL + ND1000 + Adapter Ring
SKU: SKU.1626
A
For a polarising filter to be effective you need to be on a 90 degree angle from the sun.
A
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.