Take your photography and videography to the next level with the 40.5mm Circular ND16 4-Stop Lens Filter Plus+. This high-quality, durable filter is designed to provide photographers and filmmakers with effective control over their exposure settings, even in challenging lighting conditions. Crafted with the world's finest German Schott B270 optical glass, this filter ensures no color cast, preserving the true colors of your scene. The 20 layers of advanced nano-coating technology not only facilitate easier cleaning but also offer superior protection against water, oil, and scratches, ensuring reliable performance over time.With its 4-stop density, this versatile filter significantly reduces the amount of light entering your lens, granting you the creative freedom to use wider apertures for achieving a beautifully shallow depth of field.