Post up your photo's taken in negative. This is one i just took with my camera when i was experimenting and sorry for my flickr name. I was in a hurry and couldn't think of anything else =/
http://www.flickr.com/photos/43975776@N08/4603661824/?rotated=1&cb=1273743962226
http://www.flickr.com/photos/43975776@N08/4603661824/?rotated=1&cb=1273743962226