<<Bill guessed right ... a camera that simultaneously makes a "silver" record and a digital version at the same time. A beam splitter might allow for this type of design much as triple exposures were made by one-shot color cameras.>> Maybe I could rig up a digital camera to the eyepiece of my EOS RT (pellicle mirror) camera. That would do it. Bob PS: I tried to cross my camera with an SUV: the SUV won ;o( -- Whatever you Wanadoo: http://www.wanadoo.co.uk/time/ This email has been checked for most known viruses - find out more at: http://www.wanadoo.co.uk/help/id/7098.htm