The 52mm front filter holes on lenses are designed to mount the NiSi True Color ND-VARIO Pro Nano 1-5stops Variable ND, which offers an exposure reduction of 1 to 5 stops. The entire image is darkened by the 0.3 to 1.5 density, enabling slower shutter speeds or wider apertures than are typically possible. Rotating the front filter ring, either with or without the supplied silver lever, allows you to easily alter the degree of density, assisting you in calculating the additional exposure time needed. You may more readily express movement by controlling the depth of field by adjusting your exposure duration or aperture. The transition of density occurs smoothly which allows the photographer or videographer to adjust exposure length to the exact amount required for a given scene. For easier, repeatable control over density settings, the front ring is visually marked with numbers representing the different stop values. The ring features silver side knurlings for a secure grip and easy installation and removal. For those using this filter with cinema or video cameras, combined adjustments of aperture and this filter allow fine adjustments of the depth of field while retaining the designated frame rate.

The Variable ND offers True Color that avoids colour shift seen in other Variable filters. The NiSi True Color ND-VARIO Pro Nano 1-5stops Variable ND is made from high-definition optical glass for the best resolution and quality. The glass is coated using the NiSi Nano coating providing a waterproof, oil-proof, and anti-reflective coating to avoid ghosting and reflections. The filter ring is made from high-quality aluminium, creating a very light and strong filter.

We recommend focal lengths of 35mm and longer with our variable ND range.