> Most alt-photo process could be
>reasonably thought of as 15th Century processes. Yeah really! No they
>didn't do gum prints in 1470, but they had on hand all of the technology
>infrastructure to do so. If you had a couple of savvy people sit down with
>Leonardo Da Vinci and explained the principles of optics and the camera --
>he was pretty far along on that already. And then explained wet plate
>collodion printing and the manufacture of the materials needed, and showed
>him how to make gum prints, albumen prints or a host of others, he could
>have quite easily have done so using tools and materials available to him.
>in his day.
BTW,
I have heard or read somewhere, that there were discovered some pictures,
that are claimed to be Leonardo´s photoexperiments - in color !
Does anyone know more about it ?
Regards,
Galina.