The K&F Concept Variable Fader ND Filter 1-8.6 stops is one of the most affordable VNDs on the market, so should you get one?

Variable neutral density (ND) filters are handy tools for photographers, in that their opacity can be adjusted simply by rotating them. So, why not use them for adjustable-tint sunglasses? Well, ...

Without having other variable ND filters for comparison, we can’t make definitive comments on whether the Syrp filter is superior. But we can say that it provides a compact and versatile addition to a ...

Another fantastic crowd funded film production tool: HolyManta offers a specialized lens adapter that places an adjustable ND filter between your camera and lens for "a convenient way to shoot video ...