IR Fluorescence Trichrome photography

[Fandyus]

So recently, I have developed a new (maybe) way to investigate the properties of objects. I'm not sure if it's been tried here before, but what I do is that I use three lightsources, each of different wavelength, l filter these lightsources with a QB39, and on the camera I mount a 720nm longpass and a 650nm longpass. The lightsources I use are generic chinese made spotlights that you find on eBay or Aliexpress.

https://www.ebay.com/itm/164732255359?var=464226938551

https://www.aliexpress.com/item/4000068864312.html?spm=a2g0s.9042311.0.0.27424c4dpYRypM

I use the blue, green and 395nm variety. The light causes the given object to give off fluorescence but its amount and wavelength differs slightly depending on the wavelength. I then stack the images and map them to different channels to illustrate the differences. The 650nm longpass is used in tandem in order to weed out the little green light that leaks through the 720nm longpass.

I have prepared two examples, an apple, and a decaying leaf.

leaf reference

leaf under green

leaf under blue

leaf under 395nm

leaf trichrome

apple under green

apple under blue

apple under 395nm

apple trichrome

bonus: apple UVIVF

If you have any suggestions of what else I should do, please do tell. I have tried a few other things, including pumpkin seeds, a mineral rock, the outside of an apple or the print on a juice box to see how the different dyes and bare paper behave. I might post that later. So far I love the results, I think they're really interesting and rich in how the color varies, which cannot be said for many other techniques here, such as UV, which really only gives around 3-4 colors depending on your reach. Next step for me is to make a setup with three different wavelength UV LEDs to make UV trichromes, I think that's a superior way to see into UV as it can give a full spectrum of colors and works in a way our brains understand.

But enough rambling, hope you enjoy the post.

[Stefano]

Interesting colors. Did you boost saturation? The original images seem very similar to each other.

 

[Fandyus]

Thanks. I actually don't believe I did. You can try it yourself if you make the sample images monochrome and stack them.

[Cadmium]

Fandyus, Very interesting! :-)

[Doug A]

Fandyus, the trichrome apple is spectacular. So colorful. Hope you post more images using this technique.

Thanks for sharing,

Doug A

 

[colinbm]

Great examples Fandyus

[Marco Lagemaat]

Hi Fandyus,

 

That’s impressive! I will try experiment too with it. Awesome idea. 
indead this is a way that the brain can interpreted it. Nice work. 

[Andy Perrin]

Do a kiwi or a lime!

[Fandyus]

On 10/2/2021 at 1:59 AM, Cadmium said:

Fandyus, Very interesting! :-)

Thanks.

On 10/2/2021 at 2:54 AM, Doug A said:

Fandyus, the trichrome apple is spectacular. So colorful. Hope you post more images using this technique.

Thanks for sharing,

Doug A

 

Thanks. I'll post more soon.

On 10/2/2021 at 3:23 AM, colinbm said:

Great examples Fandyus

Thanks.

On 10/2/2021 at 10:51 AM, Marco Lagemaat said:

Hi Fandyus,

 

That’s impressive! I will try experiment too with it. Awesome idea. 
indead this is a way that the brain can interpreted it. Nice work. 

Thanks! Do you plan to buy the same lights I did?

[Fandyus]

2 hours ago, Andy Perrin said:

Do a kiwi or a lime!

These are great ideas, I better get my hands on some kiwis. I'm glad to see you were able to log in, by the way.

[Marco Lagemaat]

10 hours ago, Andy Perrin said:

Do a kiwi or a lime!

 I will. And maybe also  some veggies. 
 

[Guest]

A modern day Edward Weston!

The less identifiable the object the better. If you know what I mean.

 

[Guest]

I keep returning to look at the trichrome apple.

 

At first I thought it was microscopic photo of an amoeba.

 

Now I know, for sure, it is a night sky panorama overlooking a lake.

[Fandyus]

On 10/5/2021 at 12:30 AM, Blazer0ne said:

A modern day Edward Weston!

The less identifiable the object the better. If you know what I mean.

 

 

On 10/5/2021 at 9:15 AM, Blazer0ne said:

I keep returning to look at the trichrome apple.

 

At first I thought it was microscopic photo of an amoeba.

 

Now I know, for sure, it is a night sky panorama overlooking a lake.

That's quite a big compliment! Thank you, sir.