Re: Medieval photography

Randy Riddle (rriddle@nr.infi.net)
Thu, 19 Oct 1995 08:40:29 -0400 (EDT)

I'm curious -- this is an intriguing idea.

Did they find documentation (in the form of notes or other material)
about the process or just "guess" that was the way it was done through a
chemical analysis of the Shroud?

Randy

On Thu, 19 Oct 1995, OLIVO wrote:

> For the amusement of those interested.
>
> Friend of mine in the UK saw a program about this, and says that the researchers
> repeated successfully the procedure they claim Leonardo could have followed,
> using egg, some salt and urine...
>
> The weakest part of the argument is that they claim Leonardo is also THE SUBJECT
> of the "photo", and they cannot explain why it should be him and not somebody
> else who discovered this.
>
> I am amongst the sceptics, though if it can be proved that an Italian produced a
> permanent photograph three centuries before the French, well.... :-)
>
> Oliv
>