[click on image to see a larger one]
Normal visible light image using UV/IR cut filter:
UV induced visible fluorescence (using Nichia 365nm UV LED) and UV/IR cut filter:
...and a Ranuncula bud in closeup:
Shot using my UV-Rodagon 60mm and a 400-700nm UV/IR cut filter; UV source was my Nichia 365nm UV LED for the FL shots.
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos