This was done for the CTF Mini Challenge #69 - Painting with Light, over on the Canon EOS 300D/350D Forum.
The chair was traced in a pitch black room with a laser pointer which doesn't throw any light.
I could not see the chair at any time and had to guess where it was by the way the red dot of the pointer reacted.
The red squiggles in the background are when I "lost" the chair.
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