K&F Filter Variable ND Filter ND2-ND400

The K&F Concept Nano‑X ND2–ND400 is a premium variable neutral density filter offering 1 to 9 stops of light reduction. Built from Japanese AGC optical glass with 28 nano-coated layers, a slim 7.4 mm frame, and smooth rotatable adjustment, it gives photographers full control over exposure during bright daylight and video shoot conditions.

• Variable ND2 to ND400 range (1–9 stops) for flexible exposure control 
• Premium Japanese AGC glass & 28-layer nano coating reduces glare, water, oil, and scratches
• Slim 7.4 mm metal frame minimizes vignetting on wide lenses 
• Putter-style control knob for precise and smooth adjustments
• Durable waterproof and scratch-resistant finish suited for outdoor use 
• Includes premium protective leather-effect hard case with magnetic drawstring pouch 
• Well-reviewed performance: praised for quality, ease of use, and great value