Neutral Density filters (Commonly called “ND Filters”) reduce the amount of light that comes through your camera's lens. For years, they have have not been easy to use. Traditionally, a set of ND filters from any specific brand is black or the same color with tiny identifying text. To remedy this, MAVEN ND Filters identifies the strength of each filter using specific colors. The MAVEN 6 Stop is PURPLE to match the purple sky at dusk or dawn, a perfect time to use a 6 Stop filter for long exposures. All MAVEN Neutral density filters are guaranteed to score a rating of Tier 1, meaning there is no visible color shift. This increases your workflow speed by not needing to color correct in post. Taking it a step further, each MAVEN ND filter features 16 layers of MRC (multi resistant coating) as well as a hydrophobic nano particle layer to repel water. The result is an easy to clean surface, saving you additional prep time.