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UVF Melon

Fluorescence
4 replies to this topic

#1 Adrian

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Posted 25 July 2018 - 09:04

A simple UVF image of seeds inside a honeydew melon.
Technical specs: Nikon D800 with 105mm micro Nikkor lens at f/16.
UVF approx. 10 seconds exposure with Convoy S2+ UV source. Light painted during exposure.

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  • Attached Image: melon comp lo res.jpg

Adrian Davies
www.imagingtheinvisible.com

#2 Andrea B.

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Posted 26 July 2018 - 15:23

Fluorescence is always an unexpected delight. This UVF melon looks quite frosty.

Are you using a diffuser on your Convoy? Your light painting looks nice and smooth. It is so easy to miss an area or to create hot areas when light painting. Takes a lot of practice, for me anyway.
Andrea G. Blum
Often found hanging out with flowers & bees.

#3 Adrian

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Posted 26 July 2018 - 15:36

No, just guess work! What diffusing material could you use?
Adrian Davies
www.imagingtheinvisible.com

#4 Andy Perrin

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Posted 26 July 2018 - 15:47

Love this. The dark seeds are interesting. Wonder what UVIIF would do.

#5 Andrea B.

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Posted 29 July 2018 - 15:52

Diffuser -- once Klaus gave me a small piece of plastic which was slightly "pebbled", for lack of a better term", to fit over a 365nm Nichia UV-Led. This worked to decrease the typical hot spot. Of course I have absolutely no idea what kind of plastic that was. You can search on an optics site for diffusers to see what is available. Edmund Optics has some I think.
Andrea G. Blum
Often found hanging out with flowers & bees.