Developer · Black and white
DIY/Homemade Caffenol-C-M
AvailableB&WLiquid Concentrate
Also known as: Caffenol Delta, Caffenol-C Modified
Recipe published on caffenol.blogspot.com: develop 15 minutes at 20C, agitating for the first 30 seconds then 3 times each minute. A restrainer such as potassium bromide (1 g/l) is suggested in the comments only if results are uneven or fogged.
- Type
- Liquid
- Process
- B&W
- Temperature
- 20°C
- Dilutions
- 1
- Shelf life
- Components store indefinitely separately
18–24°C (64–75°F)
concentrate
Dilutions
| Ratio | Use | Notes |
|---|---|---|
| stock | One-shot | Per litre of water, dissolved in this order: 54 g washing soda, 16 g vitamin C, 40 g instant coffee. Use within half an hour; do not store. |
Shelf life
- Concentrate
- Components store indefinitely separately
- Working Solution
- Use within 30 minutes of mixing
One-shot use only.
Often used for
Medium-speed films (the author tested T-Max 100 and Fomapan 100)Wet prints at EI 200 with ISO 100 films
Limitations & warnings
- Author does not recommend it for ISO 400 films or faster
- Soda strength may need cutting for some films (author suggests 40 g/l for T-Max 400)
Descriptions combine manufacturer specifications with community experience. Subjective assessments reflect common sentiment among photographers and may not match your results.