Friday, February 5, 2016

European Starling - Sturnus vulgaris in reflected ultraviolet and simulated bird vision photography

Today again about that a well known, attractive bird, the European Starling - Sturnus vulgaris in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. But this time it will also be about bird vision and a simulation how that might look like to us humans. Lens was my CERCO 94mm quartz flourite lens. Light source was a modified for high UV output Xenon flashlight. All shots were done at f8.

[click on image to see a larger one]

Triptych (left to right): Human vison, reflected UV and simulated bird vision (left to right):


This attractive bird has iridescent feathers with a metallic magenta shine around his throat, chest and back, which reflect at maximum under a 45 degree reflection angle, however it also reflects UV quite strongly, peaking at around 365nm (shown as yellow) and to a much lesser quantity around 385m (shown as purple). This UV image was then combined with the visible image to result into a simulated bird vision image (as birds can see UV, Blue, Green and Red) invisible to us humans (but made visible here using special photographic methods), and all this gets nicely visible here.

I have written about this bird HERE
 
Stay tuned, more will follow on that fascinating subject...

Science Center Singapore 2016 exhibit about butterfly vision

The Science Center Singapore  will open an exhibit in 2016 which will include a showcase about butterfly vision. Some of my Treasury flower - Gazania rigens images will be used for this purpose, as these clearly demonstrate the difference between human and bee vision.

[click on image to see a larger one]

Triptych of human vision, reflected UV and simulated bee vision (left to right)
 
They have chosen my work, as it "shows a great and interesting contrast between how we usually see this flower, and how the same flower might be perceived by a butterfly, particularly the colours and directional markers"

I have written about this flower and how this was photographed 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

Thursday, January 7, 2016

Minnesota Landscape Arboretum 2016 exhibit about bee vision

The Minnesota Landscape Arboretum  a part of the University of Minnsesota will open an exhibit in 2016 which will include a showcase about bee vision. Some of my Marsh marigold - Caltha palustris images will be used for this purpose, as these clearly demonstrate the difference between human and bee vision.

[click on image to see a larger one]

Triptych of human vision, reflected UV and simulated bee vision (left to right)
 

This Caltha flower has quite a prominent UV pattern: its center is UV dark, and has some UV dark veins on its petals and all this gets quite nicely visible.

I have written about this flower and how this was photographed 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

Sunday, December 20, 2015

Amber Tree autumn leaf in reflected ultraviolet photography

Today about a fallen to the ground colorful autumn leaf of an American Sweetgum - Liquidambar styraciflua tree in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U. Lens was my UV-Nikkor 105mm quartz flourite lens. Light source was sunlight. All shots were done at f8.

[click on image to see a larger one]

 This how it looks like usually (different leaf)

Diptych: Human vison (left side), reflected UV (right side):


This amber tree leaf shows fine leaf structures in VIS and reflected UV, but in UV larger dark patches get visible, where this leaf shows damage and decay, and all this gets nicely visible.


Stay tuned, more will follow on that fascinating subject...

Thursday, December 17, 2015

Gasometer Oberhausen Museum, Wonders of Nature Exhibit 2016

The project management of Gasometer Oberhausen Museum has asked me to participate with some of my works for their forthcoming 2016 exhibit "Wonders of Nature", which will open up its doors to the public March 11, 2016 and will last till December 30, 2016.

(quote) The forthcoming exhibition at Gasometer Oberhausen celebrates in visually stunning images the life of plants and animals – the highlight will be a 20 metre large terrestrial globe in the gigantic interior (unquote)


(c) Gasometer Oberhausen
My contribution will be some images of a Zinnia haageana flower in very large prints, on display in their exhibition area below that globe, demonstrating the difference between our human vision and a simulation of that of a honey bee.

Triptych Human Vision, UV, Simulated Bee Vision (left to right):  

I'm certain this exhibit will be visually stunning, as well as highly educative and suited for interested individuals as well as families and schools. Go have a look, it will be well worth it!

I have written about that flower HERE

Stay tuned, more will follow on that fascinating subject...

Friday, November 20, 2015

Orange coneflower - Rudbeckia fulgida in reflected ultraviolet photography, simulated butterfly and bee vision XIII

Today about composite shot of a decorative summer flower Orange coneflower - Rudbeckia fulgida in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. Lens was my CERCO 94mm quartz flourite lens. Light source was a modified for high UV output Xenon flash. All shots were done at f8.

[click on image to see a larger one]

Composite image: Human vison (right side), reflected UV (left side):


This attractive flower shows its very prominent UV bullseye pattern, its petals have an UV dark bottom and very UV bright tips (around 365nm), invisible to us humans, but very visible to bees and butterflies, and all this gets nicely visible.

I have previously written about this flower HERE

Stay tuned, more will follow on that fascinating subject...

BBC Four - Colour: The Spectrum of Science

BBC Channel Four has recently produced and aired their three episode series "Colour: The Spectrum of Science ". The last episode "Beyond the Rainbow" has been aired on November 18, 2015 and deals with invisible colors, resp. IR and UV, the latter also about using reflected UV for behavioural reasons (starling) and pollination (bees). I have consulted the production team about the latter and have photographed and shown them the European starlings UV pattern (I wrote about that HERE ).

Diptych (left to right): Human vison, reflected UV (Baader-U filter):


Quote BBC: " Colour: The Spectrum of Science - 3. Beyond the Rainbow
We live in a world ablaze with colour. Rainbows and rainforests, oceans and humanity, earth is the most colourful place we know of. But the colours we see are far more complex and fascinating than they appear. In this series, Dr Helen Czerski uncovers what colour is, how it works, and how it has written the story of our planet.

The colours that we see are only a fraction of what's out there. Beyond the rainbow there are colours invisible to our eyes. In this episode, Dr Helen Czerski tells the story of scientific discovery. To see the universe in a whole new light, Helen takes to the skies in a NASA jumbo jet equipped with a 17-tonne infrared telescope.

We can't see in ultra violet, but many animals can. Helen explores what the world looks like to the birds and the bees. With the discovery of x-rays we could look inside ourselves in ways that previously had only been possible after death. Today those same x-rays allow us to examine life at the atomic level, helping to develop new drugs and better materials. Ultimately, by harnessing all the colours there are, researchers are beginning to image the human body as never before, revealing new ways to treat disease."

Here now is the link to the video on BBC iPlayer

A wonderful production certainly worth watching!


Stay tuned, more will follow on that fascinating subject...