a ND must have when you really into a slow shutter or long exposure photography which give you 10 stops down …and easily create silky, motion of flowing objects e.g. water, wave, clouds … *** further details and spec can view @ https://www.schneideroptics.com/ecommerce/CatalogItemDetail.aspx?CID=679&IID=3263 short sharing @ Long Exposures Gear – Big stop ND And this … Continue reading 10 stops ND filters (Schneider – nd1000x) on Sales