A friend of mine recently told me about Diafine, a quite famous dual solution developer that is said to push mid tones by 1 stop. Diafine is a compensating developer, meaning you put in Solution A, let the film rest for 4 minutes with maybe 1 slow agitation per minute, pour out Solution A (both solutions can be reused) and then put in Solution B and let it develop further 4 minutes with agitation that is specific to the used film.
I was amazed about the tonality that the developer brings, and because I like experimenting, I thought why not try out something like that with Caffenol. Of course I knew that it will most probably not push the mids, and I cannot reuse the Caffenol mix, but it was fun for the experiment.
This is the procedure, that I used:
- Mix 240ml water with 7 Teaspoons of Instant Coffee
- Mix 100ml water with 4 Teaspoons of Washing Soda and add 2 Teaspoons of Vitamin C
- Put the Coffee mix into the developing tank, agitate once per second for the first minute
- leave it for another 2 minutes, agitate for 10 seconds every minute.
- Pour out 100ml of Water and add the Washing Soda mix.
- Agitate once per second for the first minute
- Agitate for 10 seconds every minute for 9 miutes
- Stand development for another 4 minutes.
I don’t think that the Coffee pre-wash did anything to the negatives, but this has to be proven.
So the plan is another experiment by comparing 2 same films in different developers. So stay tuned and meanwhile have a look ath the Caffeafine pictures, exposed in the range from 400 – 3200 EI: