K&F Concept Nano-X variable ND filter ND32–ND512 55 mm K&F Concept

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Nano-X variable ND filter ND32–ND512 55 mm, changes the amount of light steplessly as you turn it. It is a favourite for filming on bright days, as it lets you keep a cinematic shutter and a wide aperture without blown highlights or swapping filters between takes.

• Screws onto a lens with a 55 mm thread.
• The surface repels water and grease and resists scratches

Light under control with one turn

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. A strong range for long exposures in broad daylight — water melts into mist, clouds stretch into streaks and people vanish from the square. For everyday filming it is needlessly dark, but for this the alternative is stacking fixed filters.

• Variable ND filter — 1 pc
• Filter case — 1 pc

• Filter type: Variable ND filter
• Series: Nano-X
• Thread size: 55 mm
• Glass: optical glass, double-sided multilayer green coating
• Frame: aluminium alloy with end stops
• ND range: ND32 – ND512
• Stops: 5–9 stops
• Surface treatment: water-repellent, grease- and scratch-resistant