Tuesday, September 17, 2013

Orange coneflower - Rudbeckia fulgida in reflected ultraviolet photography and simulated bee vision VII

Today more shots of that decorative flower Orange coneflower - Rudbeckia fulgida var deamii in reflected ultraviolet using Baader-U filter and in simulated bee vision using my XBV6 filter. Lens used was an older f3.5/40mm enlarger lens. Light source was Xenon flash. All shots were done at f8.

[click on image to see a larger one]

Visible light image:  

UV image using Baader-U filter (approx. 320-395nm, effective peak approx. 375nm):  

Simulated bee vision image using experimental XBV filter:  

Triptych of the above images:  

This attractive flower shows its very specific UV pattern, its petals have an UV dark pattern, invisible to us humans. The lens being just an older enlarger lens, it transmits a little less UV (up to 340nm) than a capable UV lens like the Dialyte lenses used previously, but quite enough to make the UV pattern visible.

I have previously written about this flower HERE.

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