I have seen this done with Black and White photos; insert a negative image/photo into the photo you are taking then print that photo as a negative making the inserted photo a positive. no photoshop here, just scan your negs as if they were slides!
nekromant, why-yu, rik041, neanderthalis, mafiosa, weleasewoger72, upsi57, billy_chan, stouf & trw.
Extremely smart and interesting !!!!