The MARUMI 72MM DHG VARIABLE ND2-ND400 filter is a circular filter designed for cameras and photography use. It features neutral density filter effects and has a threaded mount fitting for easy installation. With a filter size of 72mm, this Marumi filter allows for adjustable neutral density from 2 to 400, providing photographers with greater control over light intensity and achieving their desired exposure settings for various shooting conditions. This high-quality filter is a valuable accessory for photographers looking to enhance their creative control over light effects in their photographs.