A polarising filter offers fascinating ways to positively influence image results. It not only allows you to avoid reflections on water, glasses and all non-metallic surfaces. It also increases image contrast and offers a rich colour dynamics. Especially celestial construction does not rarely look impressively deep. As with all filters of the PolarPro Quartz line, the frame is made of robust brass. The polarising filter has an additional rotating ring (also made of brass). This allows you to control the desired efficiency and examined on display or monitor before recording. Characteristic of PolarPro quartz line filters is their perfect colour neutrality. Where image results with other filters may be slightly tended to magenta or green, Quartzline filters produce virtually no deviation from the real motif colours. These filters are yours for lifelike colours! PolarPro Quartz Line Series filters are velvety and specially made from 99.9% pure quartz glass, ensuring unparalleled durability and clarity. The glass has a very low refractive index of only 1, 46, so that no loss of sharpness occurs when using this filter. In addition, quartz glass is also extremely temperature resistant and is ideal for sensors up to 100 megapixels. Simply perfect for photographers and filmmakers who like to work in extreme conditions! Each quartz filter glass is tempered with 16 wafer-thin layers. The various coatings ensure optimum scratch, water and grease resistance, avoiding reflections and a strong reduction of the risk of vignetting. In addition, they ensure a very high light transmission and a hyper-neutral colour reproduction. A well-known problem of many filters is that they bend into the lens thread when screwing in unless you have set them exactly exactly. In particular, frames made of aluminium or even plastic are quickly damaged. The filter holders of the PolarPro Quartzline are therefore made of robust brass. This high-quality metal makes it much easier to screw in and off. And by the way, this gold-coloured filter holder also looks luxurious and aesthetic.