330nm UVIVF (Ultraviolet induced visible florescence) of McDonald Creek in Glacier NP. The Algae in the creek has an especially high concentration of chlorophyll, giving the rocks that brilliant scarlet coloring as the Milky Way sets overhead. Baader U filter on light source, Kolari UV/IR cut on lens
Ultraviolet-Induced Visible Florescence (UVIVF) Dahlia. 100mm Canon Macro lens filtered with Kolari UV/IR cut filter, 30sec exposure, f/32 ISO 400. Full spectrum light filtered with Baader-U 320-380.