Wide angle lens for reflected ultraviolet photography and simulated bee vision

Today no flowers shots, but instead testing a f3.5 / 20mm wide angle lens for usefulness in UV and BV, for reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter as well as my XBV filter for simulating bee vision. Light source was sun. All shots were done at about f3.5.

[click on image to see a larger one]

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

Well, its gets obvious that this lens has a useful UV transmittance and is quite sharp also in ultraviolet light.

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

[UV] Lenses tested good for UV

This is simply a collection of links to tests I have done for various lenses in terms of UV transmission and UV focus shift. Some also contain IR tests. No specific order and no ranking implied. Only lenses tested I own; if one seems to miss, I simply don't have it.

• True Lenses for UV: UV-Nikkor 105mm, Coastal Optics 105mm
• Lens Comparison: UV Nikkor 105mm, COSI 105mm, B&L 9"
• Carl Zeiss UV-Planar 4/60mm
• Schneider Componon lenses for UV
• Rodenstock (now LINOS) Rodagon lenses for UV
• Steinheil lenses for UV
• EL-Nikkor enlarger lenses for UV
• EL-Nikkor 3.5/63mm vs 5.6/80mm
• EL-Nikkor 75mm - 80mm - 105mm for UV?
• On EL Nikkors for UV Photography and a Myth
• EL-Nikkor 5.6/80mm lens without UV + IR focus shift
• EL-Nikkor 80mm vs 105mm UV and VIS comparison
• EL-Nikkor 80mm - old vs new
• Micro-Nikkor 105mm for UV photography? Not...
• Novoflex Noflexar 35mm vs EL-Nikkor 80mm UV - VIS comparison
• Wide angle lenses for UV
• Eight 35mm wide angle lenses tested for UV
• Petri Kuribayashi f3.5/35mm for reflected UV
• A comparative, subjective shootout of lenses for reflected UV photography
• A comparative, subjective shootout of Lenses for UV Photography ... Fluorescence
• Rudbeckia - a study of lenses for UV photography
• Transmittance of some Bellows Lens Heads
• Old Achromatic Quartz Fluorite Lens for Ultraviolet Photography
• Old Achromatic Quartz Fluorite Lens for Ultraviolet Photography (ff.)
• Hamamatsu A4869 UV lens f3.5/50mm for reflected UV photography
 
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