Digital BW, The Print

> me about that. It wasn't just gelatin but a "secret" sizing that
> had something
> added, according to legend. He said pretty much gelatin and possibly some
> kind of starch. So, when double coating was done the paper didn't
> shrink at all
> and the blacks didn't sink into the surface like a lot of earlier
> platinum work.

I understood part of Penn's process was that he dry mounted the paper to a
sheet of aluminium first so that it didn't shrink during the drying
processes


tim a