Caffenol How to.
So a while back i promised i’d show everyone how to do “caffenol” development and the results it could bring once i had familiarised myself with the process.
I’ve used a few different brands of coffee and vitamin c so i shall be showing uk readers brands that i can personally guarantee work for this process.
You will need:
It is said the cheaper the better works for this process i personally found Sainsbury’s “Rich Roast” works rather well, another note when experimenting with this process is not to use decaffeinated coffee as it does not work in this process.
Vitamin C powder otherwise known as ascorbic acid. I had bought dispersible tablets as i was told from an unreliable source that they would work and i’ll clarify when i used them i had no results just a see through film. I was told that the tablets have sugars etc in them that mess with the results.
And washing soda, not to be confused with baking soda as apparently that is a common mistake when using this film, in the uk this particular brand can be found in the big four supermarkets to my knowledge and is normally about £1 a packet. In america i know most people who i’ve seen do this process use the arm and hammer brand.
I’ve seen a lot of variation to recipe however i’ve found an almost average mesure that pops up consistently across the board which means its easy enough to google developing times.
400 Ml (12 oz) Water between 19-23 degrees
5 tsp Coffee
3 1/2 tsp washing soda
1/2 tsp Vit C
I’d recommend putting the coffee in last as once you have poured in the coffee there is no going back you will not be able to see if everything has disolved. It is also advisable once everything is mixed to leave the developer to settle for five minutes then you are ready to develop. I’ve found dev times for almost every film i’ve needed online however it is not an exact science so you may end up making up your own dev times particularly with colour films as this process isn’t particularly suitable for them however yields interesting results.
Once you have passed the developing stage pour the developer out, stop, fix and wash as usual.
This process takes time to learn and i havent completely mastered it yet so i’d advice using it on film that you are not desperate on seeing the final result. it is mainly an experiment and practice makes perfect.
If you have any questions feel free to ask box me :)