A 10-stop ND filter is a piece of kit that will transform your photography whether you like it or not. Photography is no longer just about capturing what's there, but about creating a piece of art, and using a 10-stop ND filter will certainly boost your artistic ability almost more than any other piece of kit. If you're unfamiliar with ND (neutral density) filters, they are basically dark pieces of glass you put in front of your lens that reduce the amount of light available