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Re: 87C or 25A

  • From: Michel Wurtz <mw@xxxxxxx>
  • Subject: Re: 87C or 25A
  • Date: Sat, 20 May 2000 18:34:44 +0200
Lee Prindle wrote:
> 
> PS...the black outfit turning white is interesting....i know that many
> black dyes are made with red and or blue dye...i have a pair of amber

In color Infrared, when taking pictures of peoples, black clothes
or blue-jeans appears red most of time. That means that the IR is
reflected (like for foliages), but not the visible. Red clothes
appears often yellow (red + green <= IR + red).

--
Michel Wurtz
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