Wir sind Lichtfaktor

Lichfaktor are a crew of light graffiti artists called VJ sehvermoegen, graffiti artist jiar, and VJ 10X.

Glowsticks, flashlights, reflectors and torches are used to create an amazing dance of coloured light. The Lichtfaktor crew can only be seen as a blur, as if they are jumping in and out of our world. To see more of their light creations visit their Myspace profile (mostly in German).

and check out
their Flickr page.

THE BASICS
To get the best results you need a tripod. The exposure should be around 10-30 sec. or longer if needed. Stay in front of the camera and do your writing.
To not overexpose set the camera to about iso100, and close your aperture as much as possible. If there is still too much light you might have to use a nd-filter.