Photosensitive chemicals : LUSENET : B&W Photo: Alternative Process : One Thread

I am wondering if there is any type of chemical, when exposed to light, will transform from clear to black?

-- Ryan Semeniuk (, June 01, 2001


There are iron salts that are light sensitive. These iron salts are the basis for both cyanotypes, and platinotypes. A web search on these two terms should provide you with more information.

-- Joe Lipka (, June 04, 2001.

Sorry not an answer but a question. Im really curious as to what you plan to do with it?

-- stephie d (, April 02, 2002.

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