K&F Concept Nano-X variable ND filter ND2–ND32 + CPL 2-in-1 82 mm

Nano-X — variable ND filter 82 mm, changes the amount of light steplessly as you turn it. A favourite for filming on bright days: cinematic shutter and open aperture with no filter swaps.

• 28 anti-reflective layers, reflectance 0.2 %
• A CPL polariser in the same glass suppresses reflections from water and glass
• Screws onto a lens with an 82 mm thread.

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.

ND and polarisation at once

Two functions in one piece of glass: the variable ND cuts one to five stops and the polarising layer also takes the glare off water and glass. The lever on the ring can be set by feel, without reaching across the whole diameter of the filter.

The glass carries 28 anti-reflective layers and reflects only 0.2 % of the light, so no ghosting or veiling appears against the light.