Today about another early spring flower, Marsh marigold (Caltha palustris) in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV filters for simulating butterfly and bee vision. Lens was a CERCO 94mm quartz fluorite lens. Light source was sunlight. All shots were done at about f5.6.
[click on image to see a larger one]
Visible light image:
UV image using Baader-U filter (approx. 320-395nm, effective peak approx. 375nm):
Simulated bee vision (UV - VIS) using XBV6 filter:
Triptych of the above:
This Caltha flower has quite a prominent UV pattern, its center is UV dark, as well as some UV dark veins on its petals and this gets quite nicely visible.
Close-ups may be seen here.
Stay tuned, more will follow on that fascinating subject...
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos