Retro Special Developer
Development times
| Film | Dilution | EI | Temp | Time | Agitation | Source |
|---|---|---|---|---|---|---|
| Fomapan 100 Classic | stock | 100 | 20.0 °C | 3:00 | — | |
| Fomapan 200 Creative | stock | 200 | 20.0 °C | 3:00 | — | |
| Fomapan 400 Action | stock | 400 | 20.0 °C | 3:00 | — | |
| Retropan 320 Soft | stock | 320 | 20.0 °C | 4:00 | — | |
| Retropan 320 Soft | stock | 640 push 1 stop | 20.0 °C | 7:00 | — |
Reuse
Checked 21 October 2026
Foma says Foma Retro Special Developer may be used for more than one film.
The maker doesn’t publish a rule for lengthening the time, so the calculator makes no correction.
Capacity, as the maker states it: One package made up to 1 litre of working solution: 1.3 m² of film (for example 25 films of 135-36 or 120).
After processing 0,8 m2 of a film (approx 16 pcs of 135-36 or 120 type films) it is appropriate to prolong the developing time by 10% to each 0,1 m2 of a film compared to prior developing time. ... Prepared but not yet used working solution can be stored in a cold place and in a well-closed bottle during 1 year, partially depleted developing solution ... endures from 3 to 6 months.
FOMA Retro Special Developer data sheet (FOMA 04/23) - 'Developers Retro' ↗
Dilutions
- stock undiluted stockStock solution The concentrated form of a chemical, or a developer used undiluted. Read more in the glossary ›
Link to this page
Specification
- Type
- B&W developer
- Form
- Powder
- Capacity rolls per litre
- 25.0
- Shelf life, unopened
- —
- Shelf life, opened
- —
A dash means the figure has not been read off the maker’s sheet. A guess here would produce wrong answers silently.
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