Sulfur II Filters

The Sulfer II (SII) filters are a narrow-band-filters for CCD/CMOS photography.The filter only lets the light of the ionized sulfur pass and blocks the rest of the visual spectrum.
The Sulfer II (SII) filters are a narrow-band-filters for CCD/CMOS photography.The filter only lets the light of the ionized sulfur pass and blocks the rest of the visual spectrum.