Oh yeah? I bet I can make an overhead "slide" on the photocopier faster than your average professor can successfully scan in a figure from a book

Sure, Bean, that's true - but using the scanner I can not only make acetate OHP "slides" of colour ophots (from books or anywhwere, but I can also select bits of the photo, leaving out the inappropriate parts of it.

I can also put digital images direct from my camera onto OHP acetates - which includes photos of 200 year-old documents that I have accessed at the Record Office.

Photocopying is great - simple and quick, but it is limited