| Joined: | Sun Apr 1st, 2012 |
| Location: | Carthew, Cornwall, United Kingdom |
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Still learning after all these years!
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| Posted: Sun Apr 15th, 2012 08:21 |
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jk
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Very neat. I guess the camera is detecting the small changes in light as the blood is pumped and flows through the fingertip.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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