Flexible light control without filter change - infinitely variable neutral density filter perfect for reducing the amount of light incident (1 to 5 stops) without affecting colours and contrast. ATTENTION: The 7+1 MRC coating ensures high transmission and maximum anti-reflection. The additional nano outer layer ensures easy cleaning thanks to the extreme lotus effect and reduces scratches, fogging and dirt adhesion Premium line: extremely narrow filter mount prevents vignetting even with a short wide-angle zoom lens (starting from 12 mm APS) - with front thread for lens caps or lens hoods. Made in Germany: Schneider Kreuznach (B W) – your precision mechanics specialist for filters, photography, optics and precision for more than 100 years!