UV-Nikkor 105mm does Bidens in VIS-UV

[Dr Klaus Schmitt]

Amazing that dark "bullseye" UV-pattern bees and butterflies can see as a landing platform, but we humans cannot...

Shot using a UV-Nikkor 105mm at f11 on a full-specrum modified Panansonic GH4 using a modified studio flash.


There have been scientific experiments done (Prof. em. Klaus Lunau, Düsseldorf, Germany) which prove that bees

land on a flower petal and then always crawl to find the UV-dark part to find nectar and pollen (they artifically reversed

the petals and the bees then crawled to the outside and not to the center anymore)!

[Birna Rørslett]

Interesting. Do you have a link to a published paper on this?

[Akira]

Great find!  I would also like to read the paper.

[Dr Klaus Schmitt]

It should be this one:
https://www.researchgate.net/publication/272525060_Bees_birds_and_yellow_flowers_Pollinator-dependent_convergent_evolution_of_UV-patterns/link/5b5974e2aca272a2d66bb56d/download

The there is this one on "false UV color photography" where I have provided technical assistance to:
https://www.researchgate.net/publication/326318630_FALSE-COLOUR_PHOTOGRAPHY_A_NOVEL_DIGITAL_APPROACH_TO_VISUALIZE_THE_BEE_VIEW_OF_FLOWERS

PS: Klaus and I disagree a bit on that latter mapping method, as his method leads to extinguish UV patterns, whereas I have developed (unpublished) a method which preserves these UV patterns. We still communicate often... ;-)

Example:



Source: https://www.researchgate.net/publication/340940804_Nectar_mimicry_a_new_phenomenon

[Birna Rørslett]

Thanks, Klaus. I downloaded both pfds and will study them at my leisure.

[bobfriedman]

quite nice info Klaus.. and like the animation.

[Nasos Kosmas]

Perfect example of liquid chromatography here, very interesting thank you!

[Akira]

Thank you, Klaus!  I also downloaded both PDFs!

[Dr Klaus Schmitt]

Thank you and most welcome guys!

[Wannabebetter]

Thank you, Dr. Schmitt! You and this website never disappoints. What an education...hopefully I will retain much of it, too!

[rosko]

Thanks, Dr Klaus!

Very interesting scientific fact.

Your demonstration is amazing, thanks this field (UV IR)of photography.


Francis.

[Dr Klaus Schmitt]

Thanks guys!