Sunday, February 12, 2012

[UV] White Primrose (Primula) in deep ultraviolet light

When I passed by my friends' flower shop and saw he had some primroses (primulas), I wanted to see, if there would be some UV structure visible if shot in reflected ultraviolet light. This one is a bread form, all white and filled.

[click on image to see a larger one]

These UV images here also uses my standardized false UV color normal + high intensity palette:

Well and indeed there gets something visible...



Now I was wondering about the contribution of the shorter wave, deeper UV sub-bands (as I call them). Here the results of using the plain Baader U2 filter (left) versus that same filter stacked with a filter that cuts all below 360nm, but passes all above (right)

It gets pretty obvious, that these shorter UV wavelengths are able to differentiate and make more structures visible. Here the red and especially green channel response play an important role.

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

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