Made from high-quality optical glass, the Lee 100x100mm Big Stopper 10x Filter is a long-exposure ND filter designed to reduce the amount of light entering the lens by up to 10 stops.
By greatly extending exposure times, it has the effect of allowing anything that is moving in your image to become blurred or ghost-like.
The Big Stopper is compatible with the Lee 100mm Filter Holder (not included).