Wednesday, July 17, 2019

Apache beggarticks - Bidens ferulifolia in reflected ultraviolet photography, simulated bee and butterfly vision XIV

Today shots of that long blooming spring flower hybride Apache beggarticks - Bidens ferulifolia 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 a new alternative "colorful" XSP UV transmission filter, and my XBV filters for simulated bee and butterfly vision. Lens was a UV-Nikkor 105mm quartz fluorite lens. Light source was sunlight and a little help from my Nichia 365nm UV LED.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Alternative colorful reflected UV filtering:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Quadriptych of human vision, UV, alternative reflected UV and simulated butterfly vision (left to right, top to bottom):
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

Bidens has a strong visible UV pattern, its petal tips are UV bright around 365nm, its center is quite UV dark, so this gets quite nicely visible in simulated butterfly and bee vision, also using that standard UV (Baader U) and new alternative reflected UV filter which delivers rather colorful UV images.

I have written about Bidens 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

Tuesday, July 2, 2019

Cobweb house-leek flower - Sempervivum arachnoideum in reflected ultraviolet photography and simulated bee and butterfly vision II

Today more shots of a Cobweb house-leek flower - Sempervivum arachnoideum in reflected ultraviolet photography and simulated bee and butterfly vision. All shots were done at f11 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 a modified Xenon flash.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

Sempervivum flowers have a distinct UV reflection, their petals have a dark center center line, the outside part is UV darker and all this gets nicely visible here, also in simulated bee and butterfly vision.

I have posted about this flower before HERE

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos

Thursday, June 20, 2019

Rudbeckia hirta - Human vs simulated animal vision: butterfly, bee, dog, horse, bat

Today comparison shots of a Rudbeckia hirta flower Black Eyed Susan - Rudbeckia hirta using visible, reflected ultraviolet photography to create simulated animal vision images. 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 animal vision. Lens was a UV-Nikkor 105mm quartz fluorite lens. Light source was a modified Xenon flash.

[click on image to see a larger one]

Human vision:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Simulated dog vision:
 

Simulated horse vision:
 

Simulated bat vision:
 

Hexaptych of the above:
 


  1. Humans have trichromatic vision, they see Blue, Green, Red
  2. Butterflies see UV, Blue, Green, Red, they are Tetrachromats
  3. Bees see UV, Blue, Green, they are Trichomats
  4. Dogs are Dichromats, see Blue and Yellow, but also some UV
  5. Horses are Dichromats, they see Blue and Yellow, but no UV
  6. Bats do not see color, but some are sensitive to UV also
The idea behind these mappings is, to demonstrate the different forms of vision, including the ability to see UV and with this ability, to see patterns which only appear in ultraviolet light (UV) but invisible to us humans.

I chose Rudbeckia, as it has a strong UV pattern, its petal tips are UV bright around 365nm, buts its center is quite UV dark, so this gets quite nicely visible, hence why I used this 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

Monday, June 10, 2019

Apache beggarticks - Bidens ferulifolia in reflected ultraviolet photography, simulated bee and butterfly vision XIII

Today shots of that long blooming spring flower "Rockstar" hybride Apache beggarticks - Bidens ferulifolia 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 a little help from my Nichia 365nm UV LED. But today also about a different color scheme for simulated bee vision.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Simulated bee vision in alternative color mapping:
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

Same as before but with alternative color mapping for bee vision (bottom left):
 

The idea behind this mapping is, that the petal tips reflect all colors a bee can see, including UV, so it should be "white" to our eyes representing "bee-white"; the center however does not reflect UV, so it is colorful in the non-UV colors.

Bidens has a strong visible UV pattern, its petal tips are UV bright around 365nm, its center is quite UV dark, so this gets quite nicely visible in simulated butterfly and bee vision, also using a different color mapping scheme.

I have written about Bidens 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

Friday, May 31, 2019

Treasury flower - Gazania rigens in reflected ultraviolet photography and simulated bee and butterfly vision XXVI

Today more outdoor shots of that long blooming flower, a white-yellowish flower, a Treasury flower - Gazania rigens shot in reflected ultraviolet photography, 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.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision (alternative color scheme):
 

Simulated bee vision:
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

This Gazania's outer petals strongly reflect UV around 365nm, whereas the inner petal parts are quite darker, hence forming UV nectar guides for UV seeing insects. There are also some highly UV reflecting marks inside around a dark UV center, all invisible to us humans, but clearly visible to bees and butterflies, and all this gets nicely visible here, also in simulated bee and butterfly vision.

I have written about this 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

Cliff maids - Lewisia cotyledon in reflected ultraviolet photography, simulated bee and butterfly vision II

Today more shots of a long blooming, perennial spring 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.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

Bidens has a visible UV pattern, its petal tips are UV brighter around 385nm, its center is UV darker, so this gets quite nicely visible, also in simulated butterfly and bee vision.

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

Apache beggarticks - Bidens ferulifolia in reflected ultraviolet photography, simulated bee and butterfly vision XII

Today more shots of that long blooming spring flower "Rockstar" hybride Apache beggarticks - Bidens ferulifolia 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.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

Quadriptych of human vision, UV, simulated butterfly and bee vision (left to right, top to bottom):
 

Bidens has a strong visible UV pattern, its petal tips are UV bright around 365nm, its center is quite UV dark, so this gets quite nicely visible, also in simulated butterfly and bee vision.

I have written about Bidens 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

Sunday, May 19, 2019

Treasury flower - Gazania rigens in reflected ultraviolet photography and simulated bee and butterfly vision XXV

Today first in 2019 outdoor shots of that long blooming flower, a white-yellowish flower, a Treasury flower - Gazania rigens shot in reflected ultraviolet photography, 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 assistance from a Nichia 365nm UV LED .

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

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 strongly reflect UV around 365nm, whereas the inner petal parts are quite darker, hence forming UV nectar guides for UV seeing insects. There are also some highly UV reflecting marks inside around a dark UV center, all invisible to us humans, but clearly visible to bees and butterflies, and all this gets nicely visible here, also in simulated bee and butterfly vision.

I have written about this 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

Thursday, May 9, 2019

WDR 2 "Bienen live" - "Bees live" program with simulated bee vision video/images

Today about a program developed and aired by German TV and radio station WDR 2 streaming the life of three bee hives to the public and especially to kids, named "Bienen live" ("bees live").

In there will be some of my human and simulated bee vision images / videos in it to demonstrate how different bees see the world, able to see patterns which only exist in ultraviolet (UV) light, invisible for us humans.

[click on image to see a larger one]

Taraxacum in human vision (VIS):
 

Taraxacum in simulated bee vision (BV):
 

Caltha palustris in human vision (VIS):
 

Caltha palustris in simulated bee vision (BV):
 

Human vision and simulated bee vision BV HDTV videos shot in parallel of a Rudbeckia fulgida ("Black Eyed Susan") flower with pollinating bees:


All these shown flowers have a distinct UV reflection "bulls eye" pattern, its petals have a quite UV dark center (visible as green in simulated bee vision) and the outside part is quite UV bright around 365nm (visible as bright yellow in sim. bee vision). All this gets nicely visible in the photographs as well as in the HDTV videos.

 
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