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Glowing flowers (UV induced visible fluorescence)

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Alex H View Drop Down
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Post Options Post Options   Quote Alex H Quote  Post ReplyReply Direct Link To This Post Topic: Glowing flowers (UV induced visible fluorescence)
    Posted: 08 June 2012 at 21:21
During April Foolishness of this year I was fool enough to start experimenting with photographing UV induced visible fluorescence of flowers. I got hooked

For those of You who did not see those pictures and are curious, here are the thumbnails:

Week 1: Tuesday - Thursday - Saturday

Week 2: Tuesday - Thursday - Saturday

All pictures in that series, as well as recent pictures are taken with Sony A77 and Minolta 100mm F/2.8 macro, uncropped.

Here are few recent shots:

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1) Comfrey



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2) Coltsfoot



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3) Dandelion



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4) White Deadnettle



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Your comments are very appreciated and thanks for looking,
Alex

Edited by Alex H - 31 August 2012 at 20:55
 



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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 21:38
great set of photo's.No 4 my favourite.all very well presented.

what light source are you useing , a blacklight bulb/tube or shortwave uv ?

i'm just starting out into uv and infrared photography myself after getting a converted camera(filter removed).
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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Alex H View Drop Down
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Post Options Post Options   Quote Alex H Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 21:46
Thanks Neil, I am using high power 3W 365nm Nichia LED torch (just one for now, but will probably get more in the future if it works out well).

If You are interested in UV photography - You might find some interesting (and may be even useful) things in my blog

Alex
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Post Options Post Options   Quote fem2008 Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 22:16
Very beautiful indeed. As if I did not have enough stuff to do already, now I have to try this!

Thanks for sharing your info as well.
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 23:33
Originally posted by Alex H Alex H wrote:

Thanks Neil, I am using high power 3W 365nm Nichia LED torch (just one for now, but will probably get more in the future if it works out well).

If You are interested in UV photography - You might find some interesting (and may be even useful) things in my blog

Alex


thanks for the info,good blog.i will have a proper read though it later.
i have an old engineering UV inspection lamp i'm using.an led uv lamp is on the way from Hong Kong.i will see how they work out before i get more.
see my photostream on flickr;
http://www.flickr.com/photos/neilt3/
C & C welcome.
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Post Options Post Options   Quote Bass Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 23:45
Originally posted by Alex H Alex H wrote:

I am using high power 3W 365nm Nichia LED torch (just one for now, but will probably get more in the future if it works out well).

Alex


Great images. I particularly like the Dandelion - it looks 'other worldly', straight out of the Avatar forest (if you have seen the film).

What torch are you using - your own build or a custom build? The Nichia LED's are quite rare, not available in a 'mainstream' torch I doubt?

I do always look forward to your stuff. TFS.
MB
 



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Tricky01 View Drop Down
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Post Options Post Options   Quote Tricky01 Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2012 at 23:54
Some cracking work Alex. I love the scientific influences on your photographic work (or perhaps your photographic influences on your science work?).

Either way, I loved the April series (and the oktoberfest UV series) and these again are some lovely examples. Nice to see a photo of a dandelion taken in a way I haven't seen before, didn't think that was possible
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Post Options Post Options   Quote brettania Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2012 at 00:46
Alex, I corrected a typo in your heading.
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Post Options Post Options   Quote mark.t Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2012 at 07:18
Wow! Great idea, and very well executed. Love them all.
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Post Options Post Options   Quote Shu'Gi Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2012 at 08:17
Wonderful work with amazing results and a fascinating technique. Have to try that as well some day i guess

Andreas
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Alex H View Drop Down
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Post Options Post Options   Quote Alex H Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2012 at 18:00
Originally posted by Bass Bass wrote:

What torch are you using - your own build or a custom build? The Nichia LED's are quite rare, not available in a 'mainstream' torch I doubt?

I do always look forward to your stuff. TFS.


Thank You Matthew! The torch I am using is what You would call a 'mainstream'. It is not very common, though, and not cheap either. I only know one company in Germany that sells it, and also someone on eBay (US) offers a similar model for even more.

Of course, when searching for such torch on Google, one will get dozens of links to some businesses in China that sell it, but they mostly do large volume contracts...

Alex
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Alex H View Drop Down
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Post Options Post Options   Quote Alex H Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2012 at 18:07
Thank You all, Simon, Mark and Andreas for Your nice words, and to You, Cameron, for correcting me.

Simon, I guess You are correct. My work does influence my photography. In fact, large part of my work is preparing illustrations, be it line drawings or photographs. Also, I spend a lot of time tinkering with my photographic equipment, and sometimes making it. Unfortunately, it leaves little time for posting my results on Dyxum.

Alex
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Post Options Post Options   Quote owenn01 Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2012 at 00:16
Hi Alex,

Scientific work (well; management of such!) has kept me from this thread though I fondly recall the April Foolishness images.

The additional images all work well but the last two, #'s 3 and 4, are particularly striking and show a combination of intensity and delicacy that I think would be hard to achieve in any other way; certainly not without some in depth treatment at the PP stage anyway.

The Dandelion head is definitly recognizable as such but could so easily also be one of those plasma 'bulbs' one sees in gadget stores - shooting against the necessary black background also imparts an isolation that enhances the subject well. The White Deadnettle, on the other hand, has a haunting beaty to it that is hard to resist - I wonder if the Victorian/Edwardian glass makers such as Lalique ever saw this sort of ethereal effect in their studies as this is surely the sort of effect they strove to achieve in their art.

A truly fascinating series and I thank you for continuing to experiment in this area - always a pleasure and surprise to see the effect it produces.

Best regards, Neil.
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Bass View Drop Down
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Post Options Post Options   Quote Bass Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2012 at 00:25
Originally posted by Alex H Alex H wrote:

Thank You Matthew! The torch I am using is what You would call a 'mainstream'. It is not very common, though, and not cheap either. I only know one company in Germany that sells it, and also someone on eBay (US) offers a similar model for even more.

Alex


Thank you Alex. I ask because these LED's (I presume you are using Nichia 356nm NCSU033B) are amazingly hard to get hold of. For the uninitiated reading this, the LED alone would cost +100 Euros and that's if you can get one at all. They are incredible LED's which emit virtually no visible light.


I personally find it amazing that you have the skill, knowledge and equipment to capture these images and share them with us. Thank you again!
MB
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