Ruili Slim Fader Variable 55mm ND Filter Adjustable ND2 to ND400 Neutral Density Lens Filter for DSLR Camera

• The fader ND filter is a variable neutral density filter. By rotating the ring, it offers 2 to 8 stops added density. A prefer tool to produce slow shutter effects or large aperture with a result of beautifyl broken under strong light.
• Ultra Slim profile design. Thickness is only 7.3mm.
• The index marks on the filter let you know exactly the stops of ND at a glance.
• No need to carry a bunch of Filters for shooting. ONLY a single filter with the same capability with ND2, ND4, ND8, ND16, ND32...and ND400.
• Bigger front thread size can reduce the dark angle.

ATTENTION: Please don't adjust the nd filter out of ND2-ND400 to avoid a X shadow on your pictures. Technical details: Filter size: 77 mm Frame Profile: Standard Filter Density: ND2 to ND400 FStop Reduction: 1 to 8 (Adjustable) Double threaded: Yes Multi-coated: Yes (3 coatings) Optical Material: Quality Schott Optical Glass Frame Material: Aluminium