DaveO Posted February 7, 2016 Share Posted February 7, 2016 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, Australia4 October 2015Australian Native Wildflower as Garden Specimen CommentPterostylis 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.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.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.Image Reference: DO61571 Triptych: (Left to Right) Visible Light, Ultraviolet Light, Ultraviolet Induced Visible Fluorescence References:Backhouse, G. and Jeanes, J. The Orchids of Victoria, Miegunyah Press, 1995, p. 269Jones, D. & B. A Field Guide to the Native Orchids of Southern Australia, Bloomings Books, 2000, p. 186 Published 7 February 2016 Link to comment
Andy Perrin Posted February 7, 2016 Share Posted February 7, 2016 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). Link to comment
Cadmium Posted February 7, 2016 Share Posted February 7, 2016 Dave, Very nice set! :-) Link to comment
DaveO Posted February 7, 2016 Author Share Posted February 7, 2016 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 fluorescencehttp://www.ultravioletphotography.com/content/index.php/topic/1397-paper-blue-fluorescence-in-plantsor to anthocyaninsUV fluorescence in strawberrieshttp://www.ultravioletphotography.com/content/index.php/topic/1440-paper-uv-excited-fluorescence-in-strawberry Old Chemists Never Die - They Only Smell That Way :D Link to comment
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