Thursday, July 5, 2012

Grindelia squarrosa (Curly Cup Gumweed): human vision vs simulated bee vison; reflected UV ultraviolet photography

Today about Grindelia squarrosa the "Curly Cup Gumweed" in its multispectral representation. I took some shots at Hermannshof, Weinheim, Germany in normal human vision VIS, in UV using the Baader-U filter, as well as in simulated bee vision using my XBV2 and new XBV6 filters respectively.

[click on image to see a larger one]

Visual shot:

Simulated bee vison using XBV2 filter:

Simulated bee vison using XBV6 filter:

UV using Baader-U filter:

This attractive flower, pretty common to nearly all of the US only shows a little bit of UV reflection overall, but has a UV darker center.

As you may have noticed, I'm still working on my bee vision (BV) filters; BV6 is one with very intensive colors and much shorter exposure time, due to new filter glass combinations.

More about these special new filters here later in a seperate entry.

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

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