7 replies to this topic

[Andy Perrin]

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.


EL-Nikkor 80/5.6 metal


Autocrat 75/3.5


Dinner, chana masala and rice


Dinner, reflected visible light

[Andrea B.]

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?

Your dinner looks better in the visible version, methinks!

Now, about that dust.....

[Andy Perrin]

If you have any cures for dust, sweep up! I mean speak up!

[Cadmium]

More lens fluorescence:
https://www.ultravio...dpost__p__16614

[microbat52]

You need to use red lentils!

Attached Images

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Edited by microbat52, 24 December 2020 - 13:32.

[Cadmium]

Microbat, Very nice!

[Andy Perrin]

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

[dabateman]

Microbat, those look like flagella to me.
I wonder if they will be swimming around the kitchen.