K&F 77MM Multifunction True Color ND2~32+CPL with 28 Layers of Anti-reflection Green Film Waterproo

Nano-X — variable ND filter 77 mm, changes the amount of light steplessly as you turn it.

• 28 anti-reflective layers
• Screws onto a lens with a 77 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.

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. Both are built for faithful colour, so the image does not drift yellow the way cheap variable NDs do.