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UltravioletPhotography

Lens fluorescence, and my dinner


Andy Perrin

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UVIVF of some lenses. I wiped them down (dry) with a microfiber before photographing them, but there was still a lot of dust. You have no idea how much dust is on your equipment until you look at the fluorescence. So much dust.

 

The lenses were sitting on a piece of aluminum foil (which does not fluoresce). The procedure, equipment, color profile, and white balance were the same ones I used for the gourd awhile ago.

 

 

Super-Takumar 50/1.4 - this is a nice lens but it has a natural yellow color (in normal light) from the radioactive thorium in the glass. Here it glows in UV.

post-94-0-34768900-1608767259.jpg

 

EL-Nikkor 80/5.6 metal

post-94-0-01534800-1608767343.jpg

 

Autocrat 75/3.5

post-94-0-72394400-1608767398.jpg

 

Dinner, chana masala and rice

post-94-0-65439500-1608767431.jpg

 

Dinner, reflected visible light

post-94-0-97377100-1608767481.jpg

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Checking our lenses for fluorescence is something we should all do. I was recently surprised by the intensity of the fluorescence on the lettering of one of my 35/3.5s. Guess we should tape over that before using them for UVIVF? :grin:

 

Your dinner looks better in the visible version, methinks!

 

Now, about that dust.....

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Definitely lentils are bright. I spilled lentil soup the other day and my kitchen lit up -- that's how I found all the spots! :grin:
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