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UltravioletPhotography

Pterostylis baptistii [King Greenhood]


DaveO

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Oldfield, D. 2016. Pterostylis baptistii Fitzg. (Orchidaceae). Flowers photographed in visible and ultraviolet light.

http://www.ultravioletphotography.com/content/index.php/topic/1708-pterostylis-baptistii-king-greenhood/

Maldon, Victoria, Australia

4 October 2015

Australian Native Wildflower as Garden Specimen

 

Comment

Pterostylis baptistii is found in Queensland, New South Wales and far eastern Victoria in heathland and semi-swampy areas and on sheltered slopes.

 

Visible Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Metz 15 MS-1 flash, 1/200 s @ f/16 ISO 200, Baader UV/IR Cut Filter.

post-28-0-70680800-1454806570.jpg

Image Reference: DO61568

 

Ultraviolet Light: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Nissin Di866 Mark II flash, 1/200s @ f/16 ISO 200, Baader UV-Pass Filter.

post-28-0-29022900-1454806600.jpg

Image Reference: DO61570

 

Ultraviolet Induced Visible Fluorescence: Nikon D750 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens with Baader UV/IR Cut Filter, Nichia NCSU033A UV-LED with Baader UV-Pass Filter, 10.0 s @ f/16 ISO 1600.

post-28-0-97829600-1454806629.jpg

Image Reference: DO61571

 

Triptych: (Left to Right) Visible Light, Ultraviolet Light, Ultraviolet Induced Visible Fluorescence

post-28-0-12095600-1454806660.jpg

 

References:

Backhouse, G. and Jeanes, J. The Orchids of Victoria, Miegunyah Press, 1995, p. 269

Jones, D. & B. A Field Guide to the Native Orchids of Southern Australia, Bloomings Books, 2000, p. 186

 

Published 7 February 2016

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The pure UV one is my favorite. I know the fluorescence often makes for a more splashy saturated picture, but I really enjoy the understated UV palette (as standardized by this forum, anyway — yadda, yadda false colors).
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Andy, I agree with you that the UV is more interesting, especially as showing how insects may "see" the flowers but the UVIVFL tends to show where different chemical compounds may be located (lots of hand waving going on here). The pink colour is perhaps due to fluorescence of chlorophyll whereas the blue may be from NADPH (reduced nicotinamide adenine dinucleotide) which is one of the key compounds in photosynthesis

Blue fluorescence

http://www.ultravioletphotography.com/content/index.php/topic/1397-paper-blue-fluorescence-in-plants

or to anthocyanins

UV fluorescence in strawberries

http://www.ultravioletphotography.com/content/index.php/topic/1440-paper-uv-excited-fluorescence-in-strawberry

 

Old Chemists Never Die - They Only Smell That Way :D

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