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UltravioletPhotography

Mixed Maple Leaves in Multi-Spectra


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Now that it is Fall, I have been able to image something that I have been curious about for a while. How does the different color of Maple leaves affect the UV and IR?

 

Maple leaves are great in that they turn Green to yellow to orange to Red to black. So I was curious what this looks like in the different wavelengths.

 

The biggest change seems to be in the UV induced fluorescence and not in the direct reflected wavelength.

 

All images captured with Full spectrum converted Olympus EM1mk1 with Pentax UAT 85mm quartz lens.

 

Visible (White LED with no filter):

post-188-0-00195800-1572531121.jpg

 

UV-B (Captured using 313bp25 with 330WB80 filters and 2 UVB bulbs):

post-188-0-95291900-1572531133.jpg

 

UV-A (Captured using Baader Venus U Filter and 2 UVB bulbs):

post-188-0-74688000-1572531314.jpg

 

UV-A (Captured using Baader Venus U filter and 2 365nm LED bulbs with ZWB1 filters):

post-188-0-61782700-1572531146.jpg

 

IR (Captured using LP 720nm filter with two UVB bulbs):

post-188-0-20439300-1572531162.jpg

 

IR Chrome (Caputered using Lee 729 filter and KG3 2mm filter with two UVB bulbs):

post-188-0-23166000-1572531379.jpg

 

UVIVF (2A and 2mm S8612 filter using two 365nm LED bulbs with ZWB1 filters):

post-188-0-31660400-1572531500.jpg

 

UVIVIRF (2A only filter using two 365nm LED bulbs with ZWB1 filters):

post-188-0-90772200-1572531520.jpg

 

UVIIRF (720nm LP filter using two 365nm LED bulbs with ZWB1 filters):

post-188-0-69141500-1572531536.jpg

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Very nice series, David.

 

I've always enjoyed working with autumn leaves.

 

Please define UVIVIRF for me. Sorry, I can't get the V in that one. UV-induced V Infrared Fluorescence.

 

What white balance setting were you using on your Olympus?

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I came up with that one on my own, for a 2A only filter. Thus UV Induced Visible and InfraRed Fluorescence, so UVIVIRF.

Kind of almost makes sense. I am seening both visible induced and Infrared induced in the image.

I will have to get back to you on the white balance. But may have just been custom 2700 k or around there.

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