Tuesday, December 6, 2016

ELCAN UV f5.6/52mm lens for reflected ultraviolet photography using an African Violet

Today about a highly specialized UV lens, the ELCAN (Ernst Leitz CAnada) UV f5.6/52mm lens, a one-off prototype (I don't know of any other special UV lens Leitz/Leica has ever made). In lack of a flower with UV pattern, I'm using a African violet hybride flower for that test as well as my "work horse" UV filter, the Baader-U filter. Light source was a modified Xenon flash. All shots were done at f8.

[click on image to see a larger one]

Visual light image:
 

Reflected UV using Baader-U filter:
 

Simulated Bee Vision image:
 

IR image:
 

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

This specialized UV lens works very well, there is hardly any focus shift visible, not even between UV and IR (!), contrast is high, there is no visible hostport and the lens renders very sharp and crispy images. A welcome new member of my small collection of such specialized lenses.

P.S.: The images were not re-adjusted in focus between all shots, to show that there is no visible focus shift between VIS and UV.

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, November 15, 2016

Scorpio Supermoon in reflected UV (ultraviolet) light photography

Today a shotsof the Scorpion Supermoon as of 11-14-2016 in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. All shots were done at f8. Lens was a rather rare LDM-1 800mm mirror only lens.

[click on image to see a larger one]

Reflected UV light (using Baader-U filter):
 

I have written about the Moon in UV 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

Monday, October 10, 2016

Orange coneflower - Rudbeckia fulgida in reflected deep ultraviolet photography and simulated butterfly and bee vision XIV

Today studio shots of a decorative summer flower which I had still blooming on my balcony, Orange coneflower - Rudbeckia fulgida 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 UV-Nikkor 105mm quartz flourite lens. All shots were done at about f8. Light source was a modified Xenon flash, background was a dark gray. [These shots were done with a new camera system and are available on request in very high resolution (40 and 60 Mp)]

[click on image to see a larger one]

Visible light image
 

UV image using Baader-U filter:  

Simulated butterfly vision image:  

Simulated bee vision image:  

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

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, and all this gets nicely visible also in simulated butterfly and bee vision.

I have written about that flower before HERE.

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

Wednesday, September 28, 2016

Black-eyed Susan - Rudbeckia hirta in reflected ultraviolet photography X

Today outside shots of a flower originating from the USA Prairie, a Black-eyed Susan - Rudbeckia hirta in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. All shots were done at f8. Lens was a rather rare Ultra Achromatic Takumar 4.5/85mm quartz fluorite lens. Light source was afternoon sunlight.

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Diptych of human vision, reflected UV (left to right, top to bottom):
 

This flower shows a very prominent UV bullseye pattern, as its petals are very UV bright (around 365nm) to about the middle and its center is very UV dark, and all this gets nicely visible.

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

Sunday, September 18, 2016

Gasometer Oberhausen Museum, Wonders of Nature Exhibit 2016 III

Gasometer Oberhausen exhibit "Wonders of Nature" has reached more that 500.000 visitors so far and has just announced to extend the exhibit until 30.12.2016!


My contribution are some images of a Zinnia haageana flower in large prints, on display in their exhibition area below that globe, demonstrating the difference between our human vision, as well as a video presentation shown on LCD panel which originates from the BBC series "How to grow a planet - The hidden World of UV" which has several VIS and UV images of different flowers in it.

Printed image in background, LCD video display in foreground:


approx 3m / 9ft wide image:


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

The exhibit shows in total some 150 large images and video presentations by the most famous nature photographers and is not only visually stunning, but also highly educative and suited for interested individuals as well as families and schools. Go have a look, over 500.000 have already seen it, it will be well worth it!

There is also a book available about it: Wunder der Natur, Die Intelligenz der Schöpfung ISBN/EAN: 9783837514629 (in German language)

I have written about that exhibit previously HERE

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

Saturday, September 17, 2016

Black-eyed Susan - Rudbeckia hirta in ultraviolet stimulated visible and IR fluorescence photography

Today more studio shots of a flower originating from the USA Prairie, a Black-eyed Susan - Rudbeckia hirta in visible light as well as ultraviolet stimulated visible and infrared fluorescence photography using suitable filters. All shots were done at f5.6. Lens was a UV-Nikkor 105mm quartz fluorite lens. Light source was a high power Nichia 365nm UV LED, background was a dark gray.

[click on image to see a larger one]

Visible light:
 

UV stimulated visible fluorescence:
 

UV stimulated IR fluorescence (>680nm):
 

Triptych of visible light, UV stimulated visible fluorescence, UV stimulated IR fluorescence (left to right):
 

This flower shows interesting fluorescence including its bullseye pattern, but also some interesting UV stimulated IR fluorescence which reveals otherwise invsible petal structures, and all this gets nicely visible.

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

Sunday, September 11, 2016

Black-eyed Susan - Rudbeckia hirta in reflected ultraviolet photography and simulated butterfly and bee vision IX

Today more studio shots of a flower originating from the USA Prairie, a Black-eyed Susan - Rudbeckia hirta 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 newer, enhanced XBV filters. All shots were done at f8. Lens was a UV-Nikkor 105mm quartz fluorite lens. Light source was a modified Xenon flash, background was a dark gray. [These shots were done with a new camera system and are available on request in very high resolution (40 and 60 Mp)].

[click on image to see a larger one]

Human vision:
 

Reflected UV:
 

Simulated butterfly vision:
 

Simulated bee vision:
 

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

This flower shows a very prominent UV bullseye pattern, as its petals are very UV bright (around 365nm) to about the middle and its center is very UV dark, and all this gets nicely visible, also in simulated butterfly and 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