Akira Posted March 29, 2020 Share Posted March 29, 2020 Shot with Sigma fp and Nikkor-O 55/1.2 in total darkness. The only light source is TK566 365nm UV flashlight with 1.25" Baader U filter. Link to comment
dabateman Posted March 29, 2020 Share Posted March 29, 2020 looks like it has the lines ready on it to be painted for Easter. I wonder if there is a clear coat paint that only changes color when hit with UV? Could be fun as a UV fluorescent Easter egg. Link to comment
Akira Posted March 29, 2020 Author Share Posted March 29, 2020 Thank you, guys! I tentatively cast the UV flashlight onto this brown (not white) chicken egg and realized it fluoresced beautifully in saturated red, which inspired the posted image. The kitchen paper of towel-like texture laid under the objects also fluoresced in light blue. There was slight amount of visible light leak from the flashlight which casts shadows of the objects. I raised the exposure by about 1/3 stop and trimmed a bit, which were the only adjustments applied to the original DNG file, so the color is essentially SOOC. Link to comment
Stefano Posted March 29, 2020 Share Posted March 29, 2020 We talked about eggs here: https://www.ultravioletphotography.com/content/index.php/topic/3725-kiwi-uvivf Link to comment
dabateman Posted March 29, 2020 Share Posted March 29, 2020 I also photographed a brown one here:https://www.ultravioletphotography.com/content/index.php/topic/3628-brown-eggs/ The visible and IR induced fluorescence looks similar to your white egg visible fluorescence. Link to comment
Akira Posted March 29, 2020 Author Share Posted March 29, 2020 We talked about eggs here: https://www.ultravio...3725-kiwi-uvivf I also photographed a brown one here:https://www.ultravio...628-brown-eggs/ The visible and IR induced fluorescence looks similar to your white egg visible fluorescence. Thank you for the instructive links. I remember that the calcite fluoresces in orange under UV. The spectrum from the fluorescing calcium might be filtered by the shell's brown color and appear red, I guess? Link to comment
Andrea B. Posted April 1, 2020 Share Posted April 1, 2020 I think that is a really beautiful, artistic photo.It would make a fascinating print. ((I had forgotten all about eggs' fluorescence!)) Link to comment
Akira Posted April 2, 2020 Author Share Posted April 2, 2020 I think that is a really beautiful, artistic photo.It would make a fascinating print. ((I had forgotten all about eggs' fluorescence!)) Thank you, again, Andrea! This chicken egg is brown (not white) under normal light, which may make the fluorescing red even more saturated. An egg is truly a gift from the nature in every aspect, shape, color and taste! Link to comment
Stefano Posted April 11, 2020 Share Posted April 11, 2020 Wow! I didn’t know eggs are so colorful under UV light! Link to comment
Akira Posted April 11, 2020 Author Share Posted April 11, 2020 Wow! I didn’t know eggs are so colorful under UV light! That was a pleasant surprise to me, too! After the first attempt, I found that a boiled egg with its shell removed fluoresced in lime green under UV. So, I definitely wanted to add it to the original color scheme. Link to comment
Akira Posted April 12, 2020 Author Share Posted April 12, 2020 For what is worth, here are the "objects" used in the last two images: a boiled egg with its shell removed (fluorescing in lime green), a brown raw egg (in red) and a sheet of kitchen paper with the towel-like texture. Link to comment
otoien Posted April 18, 2020 Share Posted April 18, 2020 Looks like a certain non-edible mushroom, great idea! Link to comment
Akira Posted April 18, 2020 Author Share Posted April 18, 2020 Looks like a certain non-edible mushroom, great idea! Thank you, Øivind. You seem to be right. Link to comment
Shane Posted April 18, 2020 Share Posted April 18, 2020 Akira,I recommended the following book many years when we talked about the fluorescence of eggs on the "old UV site", you might find it an interesting read.The Colours of Life: An Introduction to the Chemistry of Porphyrins and Related Compounds. Link to comment
Akira Posted April 18, 2020 Author Share Posted April 18, 2020 Akira,I recommended the following book many years when we talked about the fluorescence of eggs on the "old UV site", you might find it an interesting read.The Colours of Life: An Introduction to the Chemistry of Porphyrins and Related Compounds. Hi, Shane, long time no see! Thank you for the reminder. I searched the book on amazon and eBay and found it is sold for over 100 USD I'll keep an eye on a more affordable copy. Link to comment
colinbm Posted April 19, 2020 Share Posted April 19, 2020 Hi, Shane, long time no see! Thank you for the reminder. I searched the book on amazon and eBay and found it is sold for over 100 USD I'll keep an eye on a more affordable copy. Plenty of affordable ones here....https://www.abebooks.com/servlet/SearchResults?sts=t&cm_sp=SearchF-_-home-_-Results&kn=&an=&tn=The+Colours+of+Life%3A+An+Introduction+to+the+Chemistry+of+Porphyrins+and+Related+Compounds&isbn= Link to comment
Akira Posted April 19, 2020 Author Share Posted April 19, 2020 Plenty of affordable ones here....https://www.abebooks...Compounds&isbn= Thank you, Colin, for the link. I ordered a decent one. Am looking forward to receive it. Hopefully no additional COVID19! Link to comment
colinbm Posted April 19, 2020 Share Posted April 19, 2020 No virus' wanted here either..... Link to comment
Andrea B. Posted April 20, 2020 Share Posted April 20, 2020 Shane, thank you for the book reccie: The Colours of Life: An Introduction to the Chemistry of Porphyrins and Related Compounds. This fellow, octa-ethyl-por-phyrin, looks like a Transformer out to get ya!! ********** Akira, the patterned glowing egg is way cool!I was wondering what would happen if you made some pinpoint holes in the shell and then fluoresced the egg. Would there be little glowing rays? Link to comment
Akira Posted April 20, 2020 Author Share Posted April 20, 2020 Shane, thank you for the book reccie: The Colours of Life: An Introduction to the Chemistry of Porphyrins and Related Compounds. This fellow, octa-ethyl-por-phyrin, looks like a Transformer out to get ya!! ********** Akira, the patterned glowing egg is way cool!I was wondering what would happen if you made some pinpoint holes in the shell and then fluoresced the egg. Would there be little glowing rays? LOL, Andrea! You seem to be right! And thank you for the inspiration. I would need a much stronger UV flashlight to induce the fluorescing "rays". But, in effect, you reminded me that I had a punch for the leather work. Next time, I will try to make a boiled egg with the neatly perforated "polka dot" shell. Link to comment
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