The Urth 72mm Variable ND2 400 + ¼ Black Mist Filter Plus is a dual-function photographic filter designed for professional and enthusiast photographers. This filter combines a variable neutral density (ND) function with a subtle black mist effect in a single unit, eliminating the need for stacking multiple filters. The variable ND component offers adjustable light reduction from ND2 (1 stop) to ND400 (8.7 stops), allowing precise control over exposure in bright conditions while maintaining optimal aperture settings for depth of field control. The integrated ¼ black mist filter creates a gentle diffusion effect that softens highlights, reduces contrast slightly, and produces subtle halation around bright light sources, adding atmospheric quality to images without overwhelming sharpness.

Constructed with premium optical glass, this filter features multi-layer nano-coating on both sides to minimize reflections, ghosting, and flare while maintaining color accuracy and contrast. The slim aluminum frame measures approximately 5 mm in thickness to prevent vignetting on wide-angle lenses and includes front threads for additional filter attachment. The variable ND mechanism operates smoothly with a dedicated control ring that provides precise adjustment without image cast or color shift across the density range.

This filter is compatible with all lenses featuring 72 mm filter threads and is particularly suitable for landscape, portrait, and cinematic videography applications where controlled exposure and creative diffusion effects are desired. The Urth filter undergoes rigorous quality control testing for optical performance and mechanical durability, ensuring reliable performance in various environmental conditions. The combined functionality makes this filter an efficient solution for photographers seeking both exposure control and creative diffusion without compromising image quality through multiple filter layers.