Last week I got a link from a friend of mine linking to the LightScythe project of Gavin Smith. I was immediately sold of it. I experimented already with long time exposure photography and additional, man-made, light, but I connected with some electronic hardware makes it even more fun. 🙂
By using a full programmable 2 meter LED stripe one can write something into the air while the camera is take the photography (the sensor is exposed). The LED stripe changes its pixel according to a predefined scheme while walking. The sensor get this very bright LED light which ends in showing it bright on the photography. This way you can write something frozen in air which looks very unreal, but not faked in any way!