Some catching up to do

Summer has been about all things not Caffenol, or anything DIY at all. Not had the time nor energy to do much testing. Though a few films have been given the once over.

Those that met with success are:

In 135:
Efke KB100, EI200 in Caffenol-C-M (RS), 14 min @ 20C

Leica M4-2, Voigtländer Ultron 28 f1.9, Efke KB100, Caffenol-C-M (RS)

Leica M4-2, Voigtländer Ultron 28 f1.9, Efke KB100, Caffenol-C-M (RS)

ERA100 @ EI100, Caffenol-C-M,13:30min @ 20C

Royal 35-M, ERA 100, Caffenol-C-M

Royal 35-M, ERA 100, Caffenol-C-M

Agfa APX 400, Caffenol-C-H, 13min @ 20C

Leica M4-2, VC Ultron 28mm/f1.9. APX 400, Caffenol-C-H

In 120:

Fuji Neopan 400 @ EI400, Caffenol-C-L semistand, 60min @ 20C. Forgot to add bromide, and yet the negatives came out without streaks and the base fog was well under control. Strange.

Kalloflex K2, Neopan 400, Caffenol-C-L

Kalloflex K2, Neopan 400, Caffenol-C-L

Ilford Delta 400 @ EI800, Caffenol-C-L, 5min presoak, 60min semistand @ 20C

Kalloflex K2, Delta 400, Caffenol-C-L

Lately had a couple of mishaps with Caffenol-C-L. I think I know why. Storing ready mixed solutions for a long time may work with the more concentrated versions, but not for C-L. There you need freshly made solutions, the tolerances are much lower, and any oxidisation or depletion of the substances will have a big effect on the result. C-M/H versions are much more robust to variations in pH.