K&F 49MM D Series Variable/Fader ND Filter, ND2~ND32, W/O Black Cross K&F Concept

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Nano-D — variable ND filter 49 mm, changes the amount of light steplessly as you turn it.

• 24 anti-reflective layers
• Screws onto a lens with a 49 mm thread.
• The surface repels water and grease and resists scratches

A variable ND replaces a whole set of fixed grey filters — turning the front ring changes how much light gets through, steplessly. While filming the shutter stays at 1/50 s even as the sun goes behind a cloud and comes back, with no need to stop the take or swap a filter.

The surface repels water and grease, so drops run off and fingerprints wipe away without smears; the coating also stands up to cleaning in the field.

• Variable ND filter 49 mm — 1 pc

• Filter type: Variable ND filter
• Series: Nano-D
• Thread size: 49 mm
• Glass: HD-grade AGC optical glass
• Coatings: 24
• Frame: aluminium alloy, CNC trapezoidal pattern, anodised and sandblasted surface against stray light
• Frame thickness: 7.4 mm
• ND range: ND2 – ND32
• Stops: 1–5 stops
• Surface treatment: water-repellent, grease- and scratch-resistant
• Note: At strong densities a variable ND can briefly show a dark cross across the frame; turning the ring further clears it. It is a physical property, not a fault.