K&F Concept Nano-X Series 49mm Variable ND4-64 (2–6 Stops) + CPL 2-in-1 Filter — 28 Multi-Coated AGC Glass

Combined Variable ND and CPL in one unit: This 2-in-1 filter merges a variable neutral density (ND4–ND64) providing 2–6 stops of light reduction with a circular polarizer (CPL) that reduces reflections on non-metallic surfaces and boosts color saturation and contrast. Ideal for both overcast and very bright shooting conditions. No X-shaped artifact: K&F Concept’s design and manufacturing reduce the common “X” cross problem seen on many variable ND filters, especially when used on wide-angle lenses. High-quality optical construction: Fabricated from imported AGC optical glass with 28 multi-layer coatings. The glass assembly allows only 0.2% light transmittance, is waterproof and scratch-resistant, and helps protect your lens. Precision adjustable frame: The filter’s frame is CNC-machined from aluminum alloy and features a non-slip finish with a putter for easy stop adjustments. The frame is indexed with five stops ranging from Min (ND4) to Max (ND64) so you can set exposure levels quickly and accurately. Compatibility and sizing: Made for lenses with a 49mm thread. For this 49mm filter, the compatible lens cap/hood size is 52mm. Please confirm your lens thread size before purchasing—the number shown after the “ø” symbol indicates the lens diameter. Model/Series: K&F Concept Nano-X Series. Note: Compatible with all 49mm-thread lenses.