LAST EDITED ON Nov-17-20 AT 05:28 PM (EST)
 
>Minor note, there are a number of non-silver photographic processes
>that predate the time the story is set in.
>
>https://en.wikipedia.org/wiki/Alternative_process
>https://printedpicture.artgallery.yale.edu/non-silver-processes

Strangely enough, if you look more closely, a lot of those "non-silver processes" still involve silver. Regardless, it seems unlikely that anyone ever produced mass-market portable cameras based on any of those systems, and you need that technology to have anything approximating a paparazzi culture.

--G.
and I knew someone would bring up cyanotype... :)
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