Efke KB 100 – Ilfosol S 1+9 20 C – 5 min Efke KB 100 – Ilfosol S 1+14 20 C – 9 min
Efke KB 25 – Ilfosol S 1+9 20 C – 3,5-4 min Efke KB 25 – Ilfosol S 1+14 20 C – 5,5-6 min
http://www.digitaltruth.com/devchart.html :
| Film | Developer | Dilution | ASA/ISO | 35mm | 120 | Sheet | Temp | Notes |
| Efke 100 | Ilfosol S | 1+9 | 100 | 4 | 20C |