Showing posts with label Forget-me-not. Show all posts
Showing posts with label Forget-me-not. Show all posts

Thursday, April 23, 2015

Field Forget-me-not - Myosotis arvensis in reflected ultraviolet photography and simulated bee vision II

Today shots of a spring flower, a Field Forget-me-not - Myosotis arvensis in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV6 filters for simulating bee vision. Lens was a CERCO 94mm quartz fluorite lens. Light source was sunlight. All shots were done at about f5.6.

[click on image to see a larger one]

Triptych of human vision, UV and simulated bee vision (left to right):
 


This Myosotis flower has a quite specific UV pattern, its petals are bright in UV around 385nm, but its center is quite darker. Also very interesting to notice is, that this Myosotis signals the development state of its individual flowers (or even if it has been pollinated?) by different UV "colors" (meaning the reflectance peak changes from long wave UV to shorter wave UV) and all this gets nicely visible, also in simulated bee vision.

I have written about that flower previously 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

Saturday, May 4, 2013

Field Forget-me-not - Myosotis arvensis in reflected ultraviolet photography, simulated bee vision

Today shots of a spring flower (with yellow Waldsteinia in the background), a Field Forget-me-not - Myosotis arvensis in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV filters for simulating bee vision. Lens was a CERCO 94mm quartz fluorite lens. Light source was sunlight. All shots were done at about f5.6.

[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 (UV - VIS) using XBV6 filter:
 

Simulated bee vision (UV - VIS) using XBV5 filter:
 

Quadtriptych of the above:
 


This Myosotis flower has a quite specific UV pattern, its petals are bright in UV around 385nm, but its center is quite darker and this gets nicely visible.


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