Some Bidens ferulifolia shots today using the famous UV-Planar 4/60mm lens and my proprietary XBV2 butterfly vision mapping filter.
[click on image to see a larger one]visible light shot:
butterfly vision shot (simulated, using XBV2 filter):
That last image has the ultaviolet image a butterfly (and bee) is able to see, mapped into our human image (blue, green, red) as blue so as to simulate the tetrachromatic butterfly vision.
Here another respresentation showing that side-a-side:
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