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I've developed some 4x5 Tri-x 320 film with caffenol-c and ilford rapid fixer and the results were good[0]. No scratches or grain but that might be due to the l
by chobobro 5y ago
I've developed some 4x5 Tri-x 320 film with caffenol-c and ilford rapid fixer and the results were good[0]. No scratches or grain but that might be due to the large format and not needing to agitate in a tank. My development time was 11 minutes which i guessed from these experimental times [1].
[0] https://imgur.com/a/qGeEkdw https://imgur.com/a/qGeEkdw
[1] https://www.caffenol.org/film-development-chart/ https://www.caffenol.org/film-development-chart/
- klodolph 5y agoYou'd need to make some damn large prints to see the grain in a Tri-X 4x5. My general feeling is that 8x10 where you see grain in a 35mm negative, so 32x40 is where you'd see grain in a 4x5 negative. "Where you see grain" is a bit subjective, of course.
- ghaff 5y agoThat sounds about right. Depends what speed you shoot the Tri-X though. At 400 the grain typically isn't bad. But get up to 1600 which is about the practical max and the grain is getting obvious at 8x10.
- i_am_proteus 5y agoI've had similar results with 4x5" 320TXP. Some grain showed up on 35mm 400TX so my guess is the enlarging factor is what kept the large format film grain-free. I see the same effect using traditional developers. Ultimately I didn't find any value-add with caffenol, since it still needs to be fixed, and the fixer needs to be disposed of properly. Plus, the results are better with Ilfosol 3 or HC-110 stand development.