The Urth 86mm ND4 (2 Stop) Lens Filter Plus+ is a circular neutral density filter designed for photographers and cinematographers seeking precise exposure control. This professional-grade filter provides a consistent 2-stop light reduction, equivalent to ND4 density, enabling wider aperture settings in bright conditions without overexposure. Constructed with German B270 SCHOTT optical glass, the filter maintains exceptional light transmittance and color fidelity while preventing unwanted color casts. The optical glass features 20 layers of advanced nano-coating for superior protection against water, oil, and scratches, while also facilitating easier cleaning and maintenance. Multi-coating technology significantly reduces reflections, lens flare, and ghosting to enhance image clarity and contrast. The ultra-slim rim design measures minimal thickness to prevent vignetting, particularly important for wide-angle lenses. The robust magnalium alloy construction ensures durability and resistance to damage during frequent use. The rounded edge design promotes natural transitions and gradual fall-off within images for more realistic visual results. Double-threaded construction allows for seamless stacking with additional filters or compatibility with standard screw-mount lens caps. This filter is particularly useful for long exposure photography, motion blur techniques, and achieving shallow depth of field in challenging lighting conditions. The 86mm thread size accommodates compatible lenses across various camera systems. Professional users will appreciate the consistent optical performance and reliable build quality that supports creative control in diverse shooting scenarios. The filter maintains optical integrity while providing the necessary light reduction for expanded creative possibilities in both photography and videography applications.