A "must" for every amateur & professional user High colour saturation At the same time UV filter Normal coating one layer on each side Quality standard (glass) Pro Class Impact of picture Puts contrast & depth in the picture the sky gets blue the clouds get white & the colours become clearer According to the position of the filter non-metallic reflections (water plastic glass etc) are removed The best effect is achieved with a shooting angle of 30-40° to the reflective surface