Saturday, August 22, 2026

Black-eyed Susan - Rudbeckia hirta in 3D reflected ultraviolet photography and simulated bee and butterfly vision XX

Today more shots of that beautiful flower, originating from the USA Prairie, here today again that commercially sold hybrid of a Black-eyed Susan - Rudbeckia hirta (possibly R. hirta x R. fulgida) in 3D STEREO (crosseye) in reflected ultraviolet photography using different filters aside from the Baader-U filter, but different ones today for simulated bee and butterfly vision but also part of my XBV filter set. All shots were done at f8-f11 on my balcony. Lens was a UV transmitting 35mm wide angle lens with an older Zeiss Jena Macro beamsplitter. Light source was direct sunlight. 

 
[click on image to see a larger one]

Human vision:
 

Reflected ultraviolet (UV - false color):
 

Simulated butterfly vision:
 

Simulated bee vision:
 

This flower shows a very prominent UV bullseye pattern, as its petal tips are very UV bright (around 365nm) and its center is very UV dark, and all this gets nicely visible, also in simulated bee and butterfly vision in 3D STEREO.

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