Saturday, September 1, 2012

Rudbeckia hirta: human vision vs simulated bee vison; reflected UV ultraviolet photography V

Well today I modified my high power flash for even more UV output. So a few test shots using as target a R. hirta as I have shown before in its multispectral representation. I took some shots in normal human vision VIS, in UV using the Baader-U, my all proprietary filters Jupiter-U and Saturn-U (300-350nm) filter, as well as in simulated bee and butterfly vision using my XBV2, XBV3 and XBV6 filter respectively.

[click on image to see a larger one]

Visual shot - human vision: Simulated butterfly vision using XBV3 filter: Simulated butterfly vision using XBV2 filter: Simulated bee vision using XBV6 filter: UV using Baader-U filter: UV using Jupiter-U filter: UV using Saturn-U (300-350nm) filter: IR (basically) as it was shot using only a ND filter: About all Rudbeckias and also this R. hirta have a very prominent, otherwise invisible "bullseye pattern" which gets nicely visible in UV (around 360nm) and bee vision (BV). Since leafs (petals were leafs one) reflect from 700-750nm onwards, that pattern is also invisible in IR.

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

More info on this very interesting field may be found on my site

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