A while ago I have seen some panorama shots (I think there were black and white) of a, I think, established artists that played with fact that the lens of the panorama camera is rotating. He was making pictures of people (himself?) moving with the lense, so he appeared either at multiple places on the same image or he was creating one big motion-blurred silhouette of the person across the whole picture. What could the name of this artist be? I have seen the pictures somewhere in Germany (wich doesn't the the artist must be german). Thank you for your help!