High-quality 1.8 6-Stop Neutral Density Filter for enhanced photography 64x filter factor providing a 6-stop exposure reduction for better light control Constructed from optical glass for superior clarity and color fidelity Thin, lightweight, and durable aluminum-alloy filter ring to minimize vignetting Multi-coated glass to prevent internal ghosting, reflections, and to keep the filter clean Easy-to-install front filter threads allow for use with other filters for greater versatility