The light art performance photography (LAPP), is a one-shot long time bulb exposure Photography, performed additionally with movement of light.
These images are made by Jan Wöllert and Jörg Miedza, the brains behind Light Art Performance Photography. They are from Bremen, Germany and have been working together since 2007 but neither are full-time photographers. Jan is a PA while Jorg is an office-based worker.
...some of these exposures can run for as long as an hour. Each of these pictures is one single photo that has not undergone any computer enhancement. They used a 21.1 megapixel Canon EOS 5D Mark II. More info and images at
their site.