Camera Accessories
K&F Concept 77mm ND1000 (10-Stop Fixed Neutral Density Filter) ND Lens Filter with 36 Multi-Layer Coatings, High Definition Camera Lens Filter Copper Frame(Nano-X PRO Series)
【10 Stops Light Reduction】Provides a fixed 10 stops light reduction for extreme bright day use, helps to achieve slow shutter speeds to be used on record objects movement such as waterfalls, presenting a silky smooth effect of flowing water....
https://www.bizrate.co.uk/cameraaccessories/k-f-concept-77mm-nd1000-10-stop-oid21883548121.html