C41 in Caffenol-C Workshop Recap

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Imagine Mac Gyver or another secret spy in a desperately need to develop a film with secret pictures and no photo lab. No chemicals, no way? The participants of the workshop organized by Lomography Slovakia know now what to do in such a case: Caffenol-C process. Developing liquid base on household ingredients.

Lomography.sk with the help of Šimon (user Pan Priatel on lomography.sk) the infamous Slovak lab rat held a very interesting workshop. Even though the theme was photography at some stages it looked more like a cooking course. The participants had the unique chance to learn how to develop their colour films at home with use of very basic ingredients: coffee, washing soda, vitamin-C, water. Here the recipe we have used, followed by scanned pictures we have developed during the workshop. For more info or advice don’t hesitate to write an email to info@lomography.sk

Recipe Caffenol-C developer (for a half liter tank=500ml liquid/developer)

While constantly mixing we are adding following ingredients into 500ml of water (temperature between 20-21 degrees Celsius):

  • 3 teaspoons of washing soda (powder available at your local drugstore)
  • 5 teaspoons of instant coffee
  • 1/2-teaspoon powder vitamin C

The mixture we pour into a tank where we have put our film (the film you insert into the tank in dark, rest is done on light). After pouring in the mixture we rotate (agitate) the tank first 3 minutes constantly than 10 rotations every 30 seconds.

There are different times of developing process for different films:

  • ISO 100 15 minutes
  • ISO 200 17 minutes
  • ISO 400 19-20 minutes
    (These have worked with some films, however times might differ with different brands, makes etc. need of experimentation)

After developing the film in Caffenol-C developer, you pour out the mixture, wash out the tank with water and stabilize it. We have used normal stabilizing chemicals from Illford, however also this part can be exchanged with a basic house held chemical, some experiment dishwashing liquid as the fixer. After stabilizing we wash out all the liquids, let water pour into the tank for at least for 30 minutes. After these you can take out the film hang it out and after it is dry it is ready to scan, or prove guilty the double agent.

Here’s also a video (only in Slovakian):

written by sumsi on 2010-07-05 in #events #workshop #lomography-slovakia #c41 #caffenol-c-process #bratislava

11 Comments

  1. dogma
    dogma ·

    I do this all the time for my kodak tri-x films works fantastic ;)

  2. danieldk
    danieldk ·

    Would this work with Ilford FP4 , I have a roll in need of dev, and its expensive t wend it to a lab for hand dev....

  3. gnarlyleech
    gnarlyleech ·

    This sounds like a lot of fun. I like the "old look" it gives the last few pictures. What do you mean by washing soda powder? Arm and Hammer Baking soda?

  4. warning
    warning ·

    Fantastic results!.

  5. nylonviolence
    nylonviolence ·

    should you use bio or non bio washing powder?

  6. kdstevens
    kdstevens ·

    Definitely going to try this. Has anyone used this for xpro or redscale?

  7. lomojolo
    lomojolo ·

    hey everybody, thanks for comments. the process works for C41 films, feel free to experiment with E6 or redscale, but dont know if it will work. washing soda is washing soda, try to google it out or get a translation in your language...should be available in more traditional/old drugstores. it is not baking soda nor washing powder.

  8. lomojolo
    lomojolo ·

    hey everybody, thanks for comments. the process works for C41 films, feel free to experiment with E6 or redscale, but dont know if it will work. washing soda is washing soda, try to google it out or get a translation in your language...should be available in more traditional/old drugstores. it is not baking soda nor washing powder.

  9. danieldk
    danieldk ·

    I found some info on this, It'll work on Ilford FP4 and most other B/W films, Wootness :)

  10. phoenix1206
    phoenix1206 ·

    doesn't it only work with B&W film, not C41, or both of them?

  11. aanum
    aanum ·

    I will try this one out later today :)

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