PolarPro QuartzLine

It generates a very low refractive index of 1.46 and offers excellent temperature stability. The redesigned brass filter frames can be easily screwed on and are designed to withstand even the toughest adventures. With optical coatings for a neutral color profile and multi-coatings for improved scratch resistance, water resistance, anti-reflective properties, and reduced vignetting in wide-angle shots, the QuartzLine filter allows you to capture images with lifelike colors - even in the most extreme locations in the world. The package includes a microfiber lens cloth, a soft filter pouch, and a filter case. A neutral density filter (ND filter) or gray filter blocks a portion of the incoming light. By using a gray filter, you can significantly extend the exposure time, achieving effects such as blurred water or preventing overexposure in bright sunlight with an open aperture.