VND+CPL Filter
VND+CPL Filter

VND filters generally use two pieces of high quality ultra-high gloss optical glass with a CPL polarizing film on top to adjust the filtered light by rotating the two layers of polarizing material. When one of them is rotated, the light from 2 directions can be dropped by CITS at the same time, thus achieving the effect of infinitely changing the density of the ND filter
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