Today in Spring 2026 after some hiatus due to a move to the French border more shots of a white long blooming, perennial flower Cliff maids - Lewisia cotyledon in reflected ultraviolet photography and simulated bee and butterfly vision. All shots were done at f8 in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter, as well as my XBV filters for simulated bee and butterfly vision. Lens was a UV-Nikkor 105mm quartz fluorite lens. Light source was sunlight and some UV LED help.
[click on image to see a larger one]
Human vision:
Reflected UV:
Simulated bee vision:
Simulated butterfly vision:
Quadriptych of human vision, UV, simulated bee and butterfly vision (left to right, top to bottom):
Lewisia has a visible UV pattern, its petal tips are UV bright around 385nm, its center is UV dark, so this gets quite nicely visible, also in simulated butterfly and bee vision.
But there is also a highly UV reflective area visible, formed by those shiny petals which is especially quite visible in UV!
I have written more about that flower 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
