Today more shots of a current, long blooming spring flower, an all orange variant of a Treasury flower - Gazania rigens 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, but background was switched to a grey one.
[click on image to see a larger one]
Simulated butterfly vision:
Simulated bee vision:
Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
This Gazania's outer petals reflect strongly UV around 365nm, and there are also highly UV reflecting marks inside around a dark UV center, all invisible to us humans, but all this gets nicely visible, also in simulated bee and butterfly vision.
I have written about Gazania previously 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