For bright colours
- removes reflections Neutral colour Coating one layer on each side Quality standard (glass) optical glass Rotary mount Impact on the pictures Puts contrast & depth in the picture the sky gets blue clouds get white & colours become clearer & brighter According to the position of the filter contrast & depth vary & non-metallic reflections (water plastic glass etc) are removed A shooting angle of 30-40° to the reflective surface will give the best effects