DaveO Posted March 1, 2015 Share Posted March 1, 2015 Oldfield, D. 2015. Goodenia varia R. Br.. (Goodeniaceae) Sticky Goodenia. Flowers photographed in visible and ultraviolet light. http://www.ultravioletphotography.com/content/index.php/topic/1259-goodenia-varia-sticky-goodenia/ Maldon, Victoria, Australia28 February 2015Australian Native Wildflower as Garden Specimen CommentGoodenia ovata is a dwarf shrub with sticky new growth which flowers sporadically throughout the year, particularly after rain. It is found in New South Wales, Victoria and South Australia commonly on calcareous sandy soils. Visible Light: Pentax K-5 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Metz 15 MS-1 flash, 1/180 s @ f/16 ISO 200, Baader UV/IR Cut Filter.Image Reference: DO54275 Ultraviolet Light: Pentax K-5 Full Spectrum Modification, Nikon Rayfact PF10545 MF-UV 105 mm f/4.5 lens, Nissin Di866 Mark II flash, 1/180s @ f/16 ISO 200, Baader UV-Pass Filter.Image Reference: DO54278 Ultraviolet Induced Visible Fluorescence: Pentax K-5 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, 30.0 s @ f/11 ISO 200.Image Reference: DO54283 Reference:Elliott, W.R. and Jones, D.L. Encyclopaedia of Australian Plants suitable for cultivation, Lothian 1986, Volume 4, p. 408. Published 1 March 2015 Link to comment
colinbm Posted March 1, 2015 Share Posted March 1, 2015 Good DaveYou are busy today :DCol Link to comment
DaveO Posted March 1, 2015 Author Share Posted March 1, 2015 Thanks Col, I would never in a thousand years have guessed how a visible yellow flower would look in UVIVFL. Cheers, Dave Link to comment
Damon Posted March 5, 2015 Share Posted March 5, 2015 Awesome Dave.So happy to see you including the UVIVFL with your images regularly now. Once I started doing that, at least 50% of the time I was more excited about the fluorescence pic. Good for you!Nice shots BTW. Add an IR pic and your are the king! Next time you do this--when you do the UVIVFL---replace the flower with a spoon and shoot the same settings and see what you get after a 30s exposure like you have been shooting. Or don't. :D -D Link to comment
DaveO Posted March 5, 2015 Author Share Posted March 5, 2015 Damon, Thanks, I can see the attraction now of UVIVFL. I posted shots of the spoon with the same exposure and UV-LED to subject distance herehttp://www.ultraviol...visible-output/ with the BaaderU over the UV-LED I get just a dim purple spot Cheers, Dave Link to comment
Damon Posted March 6, 2015 Share Posted March 6, 2015 Oh yeah, I remember now. Thanks. Excellent. -D Link to comment
JCDowdy Posted March 6, 2015 Share Posted March 6, 2015 Well, it seems not all your Australian wildflowers are UV-dark after all!Nice one. Link to comment
Andrea B. Posted March 6, 2015 Share Posted March 6, 2015 Indeed, this false yellow Goodenia is a nice surprise. It reminds me a bit of an iris with falls & banners like that. Link to comment
DaveO Posted March 6, 2015 Author Share Posted March 6, 2015 Hi John, Did you see what happened to one of my UV-dark eremophilas http://www.ultravioletphotography.com/content/index.php/topic/1257-eremophila-denticulata-fitzgerald-eremophila/ in UVIVFL. Hmmm... that means I'm going to have to retake them all (when they are flowering again in Spring) in my UVIVFL dark cave :D Anybody out there with a portable dark cave so that I could take UVIVFL in daylight??? Dave Link to comment
JCDowdy Posted March 7, 2015 Share Posted March 7, 2015 I saw that one, I am still trying to wrap my head around that green foliage in the UVIVFL image. I thought chlorophyll was supposed to have red fluorescence? I must be remembering it wrong. Speaking of taking UVIVFL in daylight remember that unusual leak detection camera I posted? Apparently if your dye emission is strong enough and your camera filter has a narrow enough bandpass it can be done! Link to comment
JCDowdy Posted March 7, 2015 Share Posted March 7, 2015 Dave,After a suitable caffeine ingestion and morning reading my sleep deprived brain is reasonably refreshed. Of course chlorophyll fluorescence is red. The blue-green fluorescence is due to other fluorophores, most notably polyphenols. This shorter wavelength fluorescence is in fact used an an index of plant health since many of these molecules are indicators of plant stress. There are even various agricultural and ecophysiology field instruments that detect both the red and blue-green emissions. These instruments consist of both contact and noncontact devices. I suspect that the noncontact approach may follow a similar approach to the daylight leak detection camera I referenced last night. Link to comment
DaveO Posted March 7, 2015 Author Share Posted March 7, 2015 John, I guess I can try shooting at night to do UVIVFL of flowers that can't be picked. Even in my dark cave I have had problems with unsharp images as the pesky flowers drooped or moved in a 30 second exposure under the UV-LED. It seems that some of my subjects don't fluoresce much as even with 30 s @ f/11 I still need to pull the image out of the shadows in PN (which incidentally seems to do a better job at that than ACR in Photoshop). So, I may well need my little breeze wind-break tent in the bush at night.Dave Link to comment
DaveO Posted November 12, 2015 Author Share Posted November 12, 2015 Another set taken15 October 2015 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: DO61885 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: DO61887 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 1250.Image Reference: DO61888 Link to comment
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now