crash: here's the site of michael orton --->
http://www.michaelorton.com
Slide sandwiches, double exposures and multiple exposures have become quite popular lately. And no wonder, they are extremely easy to do and make for some gorgeous artistic images. One of my favourite methods of sandwiching is a technique that was developed by the Vancouver Island photographer, Michael Orton; the “Orton Technique”. This method consists of taking two pictures of the exact same subject, identically framed, one in focus and one out of focus. When they are sandwiched together, you get surreal artistic images that seems to have a magical glow.
http://www.tonydegroot.com/Tips02.htm