![]() ![]() My question is why does this happen? I can't believe it's simply a wavelength thing like haze penetration - the thickness of the material must be 1,000 times the wavelength of the NIR. Below is a pair of images I used in the talk - the shirt is 65/35 Polyester/Cotton: kit was a full-spectrum Canon EOS M, R72 filter, tungsten light. And I was amazed to find that NIR can atually see through certain types of clothing - generally black materials. Being an ethical sort of guy (and not wanting to end up on the sex offenders' register) I experimented on myself rather than the public in the street. ![]() ![]() I didn't believe the story, especially as the article was published by that colossus of science, Cosmopolitan. However, they had to withdraw it from the market because people were complaining it could see through clothing. I came across a story about the Fujifilm X-T1 IR video camera, which had an IR mode aimed at inobtrusive nighttime filming. A couple of year's ago I was doing a presentation to a local science group on IR & UV photography, and was doing some research online. ![]()
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