ik kreeg een tip om het boek Controls in Black-And-White Photography van Richard J. Henry eens te lezen.

"This is an amazing book. Richard Henry took a very scientific approach to testing. The book has *real* data about what goes on in B&W processing including fixing and washing. Even if you don't do your own B&W darkroom work this book is well worth reading and with contribute to your understanding of how film and paper work. "