I took this the other day on our photo day out downtown. When I did it was, well, a picture of some crows in a tree. In comes the computer. I remember this effect from my photography learning days in high school. It involved negatives, inter-negatives, chemicals and time in a darkroom. Or something like that. I recall all that stuff as being fun. So is this though and the computer takes up a lot less room in the house.
The original was taken with the beercan (70-210) at 200mm 1/1000th sec f4 iso 100