Tuesday, June 30, 2015

Day Lilly - Hemerocallis lilioasphodelus in reflected ultraviolet photography and simulated bee vision II

Today shots of an attractive summer flower, a creamy yellow Day Lilly - Hemerocallis lilioasphodelus in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as in simulated bee vision using my proprietary XBV filter. Lens was my CERCO 94mm quartz flourite lens. Light source was sunlight. All shots were done at about f5.6.

[click on image to see a larger one]

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


Most Hemerocallis have a very prominent "dark throat" UV pattern, and also that gets nicely visible, also in simulated bee vision.

I have previously written 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

Jerusalem artichoke - Helianthus tuberosus in reflected ultraviolet photography and simulated bee vision II

Today shots of an attractive summer flower, Jerusalem artichoke - Helianthus tuberosus in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as in simulated bee vision using my proprietary XBV filter. Lens was my CERCO 94mm quartz flourite lens. Light source was sunlight. All shots were done at about f5.6.

[click on image to see a larger one]

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

This attractive flower has a specific UV "bulls eye" pattern, its petals and its center are UV dark, invisible to us humans and the flower outer petals are UV bright (around 365nm), and all this gets nicely visible, also in simulated bee vision.

I have previously written about that flower HERE

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

Monday, June 29, 2015

Mexican Zinnia - Zinnia haagenea in reflected ultraviolet photography and simulated butterfly and bee vision XXII

Today some shots of a very decorative summer flower, Mexican Zinnia - Zinnia haagenea in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as in simulated butterfly and bee vision using my proprietary XBV filters. Lens was my CERCO 94mm quartz flourite lens. Light source was sunlight. All shots were done at about f5.6.

[click on image to see a larger one]

Quadriptych (left to right, top to bottom): Human vision, UV, simulated butterfly vision, simulated bee vision:
 

Triptych (left to right): Human vision, UV, simulated bee vision:
 

Triptych (left to right): Human vision, simulated butterfly vision, simulated bee vision:
 

Mexican Zinnia flowers have a very specific UV pattern. Their petals are very UV dark in the middle and bottom, their petal tips, however, are very UV bright, reaching much deeper into UV as any other flower I know, and all this gets nicely visible.

I have previously written about those Zinnias HERE

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

Saturday, June 20, 2015

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

Today shots of a very liked, long blooming spring flower, an all yellowish white variant Treasury flower - Gazania rigens in reflected ultraviolet photography and simulated bee vision. All shots were done at about f5.6 in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter, as well as my XBV filter for simulated bee and butterfly vision. Lens was a CERCO 94mm quartz fluorite lens. Light source was sunlight.

[click on image to see a larger one]

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

This Gazania's outer petals reflect strongly UV around 372nm, wheras the inner parts are much darker hence forming UV nectar guides for bees. There are also highly UV reflecting marks inside around a dark UV center, all invisible to us humans but clearly visible to bees, and all this gets nicely visible here, also in simulated bee 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

Thursday, June 18, 2015

Wide angle lens for reflected ultraviolet photography and simulated bee vision

Today no flowers shots, but instead testing a f3.5 / 20mm wide angle lens for usefulness in UV and BV, for reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV filter for simulating bee vision. Light source was sun. All shots were done at about f3.5.

[click on image to see a larger one]

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

Well, its gets obvious that this lens has a useful UV transmittance and is quite sharp also in ultraviolet light.

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, June 7, 2015

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

Today shots of a spring flower Apache beggarticks - Bidens ferulifolia in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV filters for simulating butterfly and bee vision. Lens was a X80QF quartz fluorite lens. Light source was sun. All shots were done at about f8.

[click on image to see a larger one]

Triptych of human vision, simulated bee and butterfly vision (top to bottom):
 

Triptych of human vision, simulated bee and butterfly vision (left to right):
 

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.

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 14, 2015

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

Today shots of a very liked, long blooming spring flower, an all yellow variant Treasury flower - Gazania rigens in reflected ultraviolet photography and simulated bee and butterfly vision. All shots were done at about f5.6 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 CERCO 94mm quartz fluorite lens. Light source was sunlight.

[click on image to see a larger one]

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

Triptych of human vision, simulated bee and butterfly vision (left to right):
 

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, and 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