Modifying developers for developing old film
I've been doing a lot of this, just developed some Verichrome that expired in 1947 with good results.
B&W is much easier than color films though.
You need to use a FAST developer to reduce fog from my limited trial runs, so find a developer that has fast times like Ilfsol 3 which does most films for 5 minutes. Long developers seem to introduce fog.
I've been collecting info on older color films and I'm putting together the original developers from scratch. I think that's much better ultimately. It's just an arduous process.
Examples of "success"
If you find the full C-22 process chemistry WITH actual measurements, please pass it along.
Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk