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Food under UV Induced Fluorescence

Fluorescence
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#1 Damon

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Posted 31 December 2014 - 04:47

Food Under UV induced Fluorescence

I thought is would be interesting and perhaps eye opening to see a little bit about that we eat everyday through the eye of UVIVFL (Ultraviolet Induced Visible Fluorescence).

In spirit of Andrea's fabulous tangerine pics...

Clementine
Unfortunately my box only says from Morroco on it so I don't know the variety. There seems to be a few--Nova, Nour, Afourar, Ortanique, Nules and Nadorcott

Comment:
These clementines were bought at ShopRite grocery. Doubt they are organic.

Reference:
1. http://www.clementin...rus-brands.html


Visible: Canon 30D Unmodified,Canon EF24-105mm f/4L IS USM, Canon MT-24EX macro twin light flash, 1/8 s @ f/8 ISO 100, No Filters.
Attached Image: Clementine_Visible light©DNoe_resize.jpg

This is pretty strange in that they both look close to the same in visible and are from the same box but clearly something has happened or there is more than one variety here.
UVIVFL: Canon 30D Unmodified, EF24-105mm f/4L IS USM, 3 Blak-Rays B-100AP, 2.5 s @ f/8 ISO 100, No Filters.
Attached Image: Clementine_UVIVFL©DNoe_resize.jpg



Visible: Canon 30D Unmodified,Canon EF100mm f/2.8 Macro USM, Canon MT-24EX macro twin light flash, 1/100 s @ f/11 ISO 100, No Filters.
Attached Image: Clementine Macro_Visible light©DNoe_resize.jpg


UV almost renders the organic tissue transparent here.
UVIVFL: Canon 30D Unmodified, Canon EF100mm f/2.8 Macro USM, 3 Blak-Rays B-100AP, 2.5 s @ f/11 ISO 100, No Filters.
Attached Image: Clementine Macro_UVIVFL©DNor_resize.jpg


-D

#2 Damon

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Posted 31 December 2014 - 04:48

Chicken Eggs

Below are a few general pictures of eggs. I haven't tried white ones as my chickens only produce the light brown color.

Whole Egg
Visible: Canon 30D Unmodified,Canon EF100mm f/2.8 Macro USM, Canon MT-24EX macro twin light flash, 1/100 s @ f/11 ISO 200, No Filters.
Attached Image: Whole Egg _Visible light_©DNoe_resize.jpg


UVIVFL: Canon 30D Unmodified, Canon EF100mm f/2.8 Macro USM, 3 Blak-Rays B-100AP, In total darkness, 8 s @ f/11 ISO 200, No Filters.
Attached Image: Whole Egg _UVIVFL_©DNoe_resize.jpg


Diptych
Attached Image: Whole Egg©DNoe_resize.jpg


Whole Egg in Pan
Visible: Canon 30D Unmodified,Canon EF24-105mm f/4L IS USM, Canon MT-24EX macro twin light flash, .8 s @ f/11 ISO 200, No Filters.
Attached Image: Whole Egg in Pan_Visible light©DNoe_resize.jpg


You can see how UV makes a clean pan look fairly appalling
UVIVFL: Canon 30D Unmodified, Canon EF24-105mm f/4L IS USM, 3 Blak-Rays B-100AP, In total darkness, 4 s @ f/11 ISO 200, No Filters.
Attached Image: Whole Egg in Pan_UVIVFL©DNoe_resize.jpg


Diptych
Attached Image: Whole Egg in Pan©DNoe_resize.jpg


Egg Broken in Pan
Visible: Canon 30D Unmodified,Canon EF24-105mm f/4L IS USM, Canon MT-24EX macro twin light flash, 1/100 s @ f/11 ISO 200, No Filters.
Attached Image: Egg broken in pan_Visible light_©DNoe_resize.jpg


If you ever read any Dr. Seuss you may recognize the egg below
UVIVFL: Canon 30D Unmodified, Canon EF24-105mm f/4L IS USM, 3 Blak-Rays B-100AP, In total darkness, 1.3 s @ f/11 ISO 200, No Filters.
Attached Image: Egg broken in pan_UVIVFL©DNoe_resize.jpg


Diptych
Attached Image: Eggs in pan©DNoe_resize.jpg

-D

Edited by Damon, 31 December 2014 - 16:29.


#3 colinbm

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Posted 31 December 2014 - 05:14

Gulp....... ;)

#4 Damon

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Posted 31 December 2014 - 16:44

Banana (that I forgot about for a ~ 2 weeks)

So I was moving some gear around on my bench and picked up what I thought was something else and to my surprise it was a banana I brought out to take pics of ~ 2 weeks ago.
Even though it has been kinda cold, it had begun to change.
Normally you would say ewww let me chuck that rotting thing. But any proper UV crazy person who thinks this all must add up to something wonderful and one picture someday will all the sudden unlock long standing mysteries would of course say-- oooh I wonder what that looks like under the influence of UV.
;)

Banana ~2 weeks post freshness
Visible: Canon 30D Unmodified,Canon EF100mm f/2.8 Macro USM, Canon MT-24EX macro twin light flash, 1/125 s @ f/7.1 ISO 200, No Filters.
Attached Image: Rotting Banana_Visible light©DNoe_resize.jpg


UVIVFL: Canon 30D Unmodified, Canon EF100mm f/2.8 Macro USM, 3 Blak-Rays B-100AP, In total darkness, 2 s @ f/8 ISO 200, No Filters.
Attached Image: Rotting Banana_UVIVFL©DNoe_resize.jpg


Diptych
Attached Image: Rotting Banana_UVIVFL©DNoe_resize.jpg


-D

#5 Andrea B.

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Posted 31 December 2014 - 18:24

WOW!!! Lovethatbanana

GREATSTUFF!!!

(spilledeggnogonthismackeyboard
cannotcleanit
sorryforweirdpostbutjusthadtocomment)
Andrea G. Blum
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#6 colinbm

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Posted 01 January 2015 - 00:41

That bastard Murphy is at it again!

#7 Damon

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Posted 01 January 2015 - 03:11

Thanksforthecomment, noproblemanddon'tworryyouwillworkitout.

I don't think Murph ever sleeps.

-D

#8 colinbm

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Posted 01 January 2015 - 03:21

That is eggcellent Damon, I hadn't seen the eggs before now, we must have crossed posted somehow.....
We'll have to call you Dr Seuss, with the green eggs & greasy pan ;)
Col

#9 Damon

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Posted 02 January 2015 - 04:29

I am Damon
Damon I am

That Damon-I-am
That Damon-I-am!
I do not like
That Damon-I-am

Do you like
Green eggs on pan?

I do not like them,
Damon-I-am.
I do not like
Green eggs on pan.

Would you like them
Shortwave or long?

I would not like them
Shortwave or long.
I would not like them
any light wave strong.

I do not like
Green eggs on pan.
I do not like them,
Damon-I-am

Would you like them
In your shed?
Would you like them
With infrared?

I do not like them
In my shed.
I do not like them
With infrared.
I do not like them
At any strength.
I do not like them
Any wavelength.
I do not like green eggs on pan.
I do not like them, Damon-I-am

Would you eat them
In near UV?
Would you eat them
In lieu of tea?

Not in near UV.
Not In lieu of tea.
Not in my shed.
Not in infrared.
I would not eat them at any strength.
I would not eat them any wavelength.
I would not eat green eggs on pan.
I do not like them, Damon-I-am.

Would you? Could you?
In white light?
Eat them! Eat them!
In visible light.

I would not,
Could not,
In white light

You may like them.
In UVB.
You may like them
In UVC?
You do not like them.
In any UV.
Try them! Try them!
And you may see.
Try them and you may I see.

Damon!
If you will let me be,
I will try them.
In any UV.

Say!
I like green eggs on pan!
I do! I like them, Damon-I-am!
And in my shed. And in infrared.
They are so good no spectrum is dead!

So I will eat them in near UV.
And I will eat them in lieu of tea.
And I will eat them in white light.
And I will eat them with visible light.
And I will eat them shortwave or long.
Say! I will eat even if Blak-Ray is wrong!

I do so like
Green eggs on pan!
Thank you!
Thank you,
Damon-I-am


-D

#10 colinbm

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Posted 02 January 2015 - 04:57

See, just don't say I can't reggognise an eggspert when I see one.
Damon, you are an artist approaching the height of your career.
We will see what talent I can crack out of this egg over the next year......it will be interesting to be a part of Damon's rise in fame.
Cheers
Col

#11 Andrea B.

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Posted 02 January 2015 - 16:58

And I see that we have finally lost all of our scientific seriousness. Oh la !!! :lol: :lol: :lol:

Green Fluor Eggs & Ham will become a classic, I'm sure of it.

*******************

Now, back to that clementine.
The visible fluorescence foto is quite interesting. It is very pretty.
I still worry a bit about using unfiltered illumination and unfiltered lens when making these kinds of fotos.
Just out of curiosity, I would like to see you do a study where you filter the lens with a UVIR-blocker and with an IR-Pass filter.
We should think about presenting "control" shots when we can.

Eggs are a "classic" in UV and UVIVF. But the interesting pan is a wonderful idea !!
In the UVIVF foto, does the egg yolk "glow" with fluorescence?
It is sometimes difficult to tell what is fluorescing and what is not.
Andrea G. Blum
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#12 Damon

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Posted 02 January 2015 - 17:28

Yeah I thought about that awhile ago which is why I went through with Shane's chrome test. Accordingly my current rig passed FWIW.

I will try the UVIR blocker. What's a good cheap one?
The IR-Pass filter will not likely make any difference in that the lenses I am using are coated already to block that. Having no IR-pass filter on the end of my 100mm macro is letting already allowing all possible IR no?

Can you take a pic of a broken egg?
The egg certainly appeared to be glowing. I have been trying to have my pictures look like what my eyes are seeing. My eyeballs should be White Balancing correctly no?

-D

#13 Damon

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Posted 02 January 2015 - 18:44

Re:I still worry a bit about using unfiltered illumination.
The Blak-Rays are filtered by woods glass or did you mean something to filter out everything but UV?

-D

#14 Andrea B.

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Posted 02 January 2015 - 21:37

The idea for the IR-Pass filter was to see if there is any UV-induced Infrared fluorescence. (whee!)
Which would be very interesting to see. I think I got some once and posted it somewhere on UVP.

If you are all set up to shoot, then it's easy enough to also work with an IR-pass filter on a full-spec camera. (Like I forgot to do with my Satsuma shoot.) You would want to use an IR-pass which blocks all Visible light, of course. Typically a good choice is around 830nm such as the B+W 093. I'd look at uviroptics on Ebay for an IR-pass if you don't already have it. He always offers good charts.

There are no particularly cheap UV/IR blockers, so maybe think about that some other time. The Baader UVIR cut is around $130 I think.

***

Cool that the yolk is indeed fluor-ing. We don't keep eggs these days. So I don't have them handy to shoot.

***

My eyeballs should be White Balancing correctly no?
Well we hope so if you are not colour-blind. :lol:
Don't forget, however, that you can be affected by "after colours" when you have stared at one particular colour too long.

People's colour memory is usually pretty bad though. "-)
Have someone look at a colour patch and try to "remember" it and later pick it out of a lineup of very similar tints and tones. Do you know the Tiffany (the jewelery store) colour? I tried to pick that out of a lineup and failed. I "remembered" it as being very much more blue than it actually is. It is really more of a cyan.
Andrea G. Blum
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#15 Damon

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Posted 02 January 2015 - 22:08

IR fluorescence--ooh that's sounds cool!
Do you think I could get away with using an IR-pass filter with the D70 and see IR fluorescence if it was happening?

Thanks for the optics info.

-D

#16 baffe

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Posted 02 January 2015 - 22:27

Hi All!

Beautiful Pictures Damon.

And I love that thead!

! da baffe, still woring on some uv flash units

#17 Damon

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Posted 03 January 2015 - 00:33

Greetings baffe,
That's great, when you are done with those flashes send them right over. :lol:

-D

#18 Andrea B.

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Posted 03 January 2015 - 17:38

Do you think I could get away with using an IR-pass filter with the D70 and see IR fluorescence if it was happening?

Only if you have recently developed Infrared vision.....
I've heard strange stories up this way about the side effects of living down there in the Pineys, so anything is possible.

j/k..... :lol:

If you are asking whether you can record IR with the D70 and an IR-Pass filter, the answer is yes - although the exposures might be long.
Andrea G. Blum
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#19 Damon

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Posted 03 January 2015 - 20:02

Ha!
Sigh, if only I could say those stories weren't true...

So this could be my set-up?
-D70 with El-nikkor
-IR-Pass filter ~830nm
-Baader U & UV cut filter
--Blak-Rays raging and darkness required if trying UV-induced Infrared Fluorescence
--some fluorescing targets
--iso long enough to bring noise to an unacceptable level

Is there such a thing as UV-induced UV Fluorescence?

Is there such a thing as Visible-induced IR fluorescence?
--darkness thus not required--could be in full sun?

-D

#20 baffe

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Posted 03 January 2015 - 21:13

Hi Damon!

You can only detect IR induced by something else if your light source doesn't supply infrared.

My blackrays do so!

! da baffe

Edited by baffe, 03 January 2015 - 21:13.