The NiSi True Color ND-VARIO Pro Nano 1-5stops Variable ND Filter for IP-A Holder provides an exposure reduction of 1 to 5 stops to capture real motion blur or lock in the best exposure time. The 0.3 to 1.5 density creates a darkening of the entire image, allowing wider apertures or slower shutter speeds than usually possible. The degree of density is easily controlled by rotating the front filter ring. By slowing your exposure time or increasing your aperture, you can control the depth of field and convey movement more easily. 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 NiSi True Color ND-VARIO Pro Nano 1-5stops Variable ND Filter for IP-A Holder is compatible with the NiSi IP-A filter holder for iPhone (Sold Separately) and attaches using a patented quick bayonet mount. To install NiSi IP-A circular filters align the circular filter bayonet to three installation positions. Ensure that the outer bayonet of the filter aligns with the IP-A holder slot and turn clockwise to tighten. If multiple filters need to be installed, align the three bayonets on the second round filter with the three holes on the filter clip slot fixed on the IP-A holder. Ensure that the outer bayonets of the filter are completely aligned with the round filter clip slot, then turn clockwise to tighten.

The Variable ND offers True Color that avoids color 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.