h a l f b a k e r yNot so much a thought experiment as a single neuron misfire.
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[jmvw]'s idea (Tan Tattoo - see link) reminded me of this one - don't know whether to put it as Fashion:Tattoo:Temporary or Fashion:Tanning, but here it is:
Take a black and white medium or large format negative (or digitally print onto acetate if you must) and sellotape to a body part. Lie in sun
until golden brown - baste with suncream as necessary and season to taste (probably summer).
This should produce a positive with tones ranging from as white as you started to as brown as you might normally tan to, and all those in between.
Tan Tatoo
Tan_20Tattoo
The idea which reminded me of this idea that I had some time ago. [TomP, Mar 03 2011]
it's the natural version of this idea
Tanner_20pad_202
Tanner Pad [Voice, Mar 03 2011]
UV transmittance of film base
http://photo.net/bl...ishing-forum/00YKdn
Asking elsewhere on UV transmittance of film base [TomP, Mar 04 2011]
[link]
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I'd suggest linking to the inspiring Idea instead of lauding it inline to the post. Seems a good enough category. |
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Oh yeah, finally another use for my negatives. The 35mmm is not going to be much use, but the 2 1/4 would work okay. |
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Or could I use a lens fixture and magnify it and lay very still under it? |
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very clever - I wonder what the resolution of skin is? |
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If UV is what gives you a tan, then would it be filtered by
both the black and clear parts of the negative? |
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Correct me if I'm wrong, but I think you could make
one where you don't know what the picture is until
you tan with it. I believe you could make the uv
attenuated parts invisible. |
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Unfortunately most materials you could make these negatives from block UV-b, the suntanning part of UV. As [Ling] alluded to. |
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Tried this with aluminium foil for the masking, back in the 1970's, however, as it was in the British summer, difficult to see if it had worked or not. |
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I thought I'd ask some knowledgeable people about UV transmittance[link] |
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Transmittance of silver-iodide and cellulose ? |
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