Printed from an ink-jet negative on Ryman's OHP film (in other words nothing fancy). As the foil is very thin I print the image on the far side of it from the emulsion to avoid cross contamination between emulsion and printer ink. The original image was a 35 mm colour negative of 3 years previously. The trail of bright spots in the top left hand corner are the flashing navigation lights of an aircraft preparing to land at Heathrow. Rather obviously a time exposure of several seconds was necessary. The 'ghost' images of two passers by can be seen on the footpath.