[Johnny]

PranaView is a multi-stage optical filter consisting of a cobalt blue glass, which forms the basic red and blue transitions, a red glass, which forms the sharp violet/ultraviolet waveform, a blue plastic film filter to fine tune the red / blue color balance, and a combined polycarbonate impact shield and UV filter.

Фильтр Rosco - синий, но в таблице он обозначен как ND.