[click on image to see a larger one]
UV-Nikkor 105mm Lens:
Human Vision (VIS):
Reflected UV (Baader-U):
Simulated Butterfly Vision:
Simulated Bee Vision:
Quadriptych of VIS, UV, sim. Butterfly and Bee vision (left to right, top to bottom):
Quartz Fluoride Condensor Lens 81mm:
Human Vision (VIS):
Reflected UV (Baader-U):
Simulated Butterfly Vision:
Simulated Bee Vision:
Quadriptych of VIS, UV, sim. Butterfly and Bee vision (left to right, top to bottom):
This orchid has a very specific UV pattern, its petals are very UV dark, but its lower petal lip has on the lower center a very UV bright spot as well as on its center "nose" formation an UV reflecting spot and all this gets nicely visible, also in simulated Bee and Butterfly vision, on both used lenses.
The lenses itself differ in focal length, 105mm for the UV-Nikkor vs 81mm for the Quartz Fluoride Condensor lens, and lens speed f4.5 vs f3.2 but other than that they are quite comparable: there is hardly any focus shift, just sharpness and contrast is higher with the rather expensive UV-Nikkor lens compared to the Quartz Fluoride Condensor lens, quite as expected. Other than that this old lens does very well, but it only covers mft sensor format, possibly APS-C (with another modification).
I have written more about this orchid HERE and more about that old quartz fluoride condensor lens 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
