This is a negative scan of my first try with Caffenol C-M using expired Kodak 160NC medium format C-41 film. It is shot as metered and shot with a Mamiya RB67/90mm lens. My son playing in the first snow of the season.
The Recipe was for Caffenol C-M
400ml distilled water
1g Potassium Bromide
22g Arm & Hammer Washing Soda
6g Vitamin C tablets from Walgreens (generic) crushed with Coffee bean grinder.
16g Folgers regular instant coffee (crystals)
11 minutes at 20C/68F
Used water as a stop bath, and rinsed 7 times, then Fixed with normal B&W fixer.
I love the medium format negative. Very little grain...and lots of life left in this Color Negative film that was expired. I happened to find a deal on Ebay for some Kodak Porta 160NC film. 22 rolls for $11. It was a great deal. plenty of film to experiment with.
You can use B&W film as well as Color Negative film (C-41) when using Caffenol. I mention in this above example that the developing can I was using is 400ml. If you have a different size container that you are developing in, then figure for your own size. The figures below give you an amount to start from using 1 liter. Divide by 10 for each 100ml of solution.
54g Washing Soda
16g Vitamin C (ascorbic acid)
40g Folgers Coffee Crystals (not decaf)
