You stand in a room with a big black painting. Behind you in the wall there are 4 small cameralenzes visible in the wall. On the right side there are some security monitors. On the monitors you see yourself (me and michiel van der zanden) in front of the painting, but on the screens the black painting is replaced by a painting of a landscape... Isn't it magic? ;-)
more info see: http://www.oliverlutz.com/main.htm