The Add on Kit for Swift True Color VND 1-5-Stop Kit from NiSi is a simple way to extend the capabilities of the NiSi Swift True Color VND 1-5-stop Variable Filter. With this add-on kit, it is easy to add an ND16 (4-stop ND) filter to the system, creating a total of 1-9 stops of filtering power. This expanded neutral density range offers increased control over exposure settings, allowing the use of reduced shutter speeds and wider apertures for stunning shots. Adding density allows a wider aperture to be used for finer control over depth of field, allowing increased bokeh to help isolate the subject of an image. It can also provide a longer shutter time to add image blur or enhance an image's sense of motion. The True Color design avoids color shift, making it possible to take pictures in any condition - bright and sunny or dark and dreary. The Swift System also comes with an exposure range-control filter ring with hard stops at each end to easily dial in a desired density, without creating the "X" effect found in other products.

The 1/4 Black Mist filter adds cinematic look to images without increasing exposure. Its design suppresses highlights and lifts shadows for well-balanced contrast, and to maintain a strong center with a pleasing glow from light sources. It causes highlights to bloom, while also softening texture for a more filmic look. It also softens blemishes and evens out skin tone for easy portraiture.

Made of optical glass, these filters have anti-reflective multicoating to reduce lens glare and optimize light transmission. They also feature a protective nano-coating that is waterproof, making them ideal for use in any type of photography and in harsh environments. The ND4 filter can be used by itself with the Swift Friction Mount System adapter ring or added on to the NiSi True Color VND 1-5-stop variable ND filters for even more protection against light.