K&F Concept Nano-X True Color variable ND filter ND2–ND32 58 mm

Nano-X True Color variable ND filter ND2–ND32 58 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.

• 28 anti-reflective layers
• Screws onto a lens with a 58 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 range is set with a lever on the rim and end stops hold both ends, so the filter cannot be turned past the point where variable ND filters draw a dark cross. The titanium coating also keeps the colours neutral in the middle of the range. 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.