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Table of Contents
Film Development Times (summary)
Rules of thumb
The table below suggests how to select film exposure index (relative to box-speed) and adapt film development time (relative to datasheet) given an expected subject brightness range (SBR).
| SBR | EI | Time |
|---|---|---|
| L | - | - |
| N | -2/3 | -15% |
| H | -1 1/3 | -30% |
The table below suggests how to adjust film development to accomplish N+/- development.
| N-1 | -15% < N-1 < -25% |
|---|---|
| N+1 | +25% < N+1 < +40% |
Kodak D-76
Ilford HP5+
| Film | EI | Dil | Source | Time | Note |
|---|---|---|---|---|---|
| HP5+ | 400 | 1+1 | Ilford | 11:00 | (13 min for ID11) |
| HP5+ | 400 | 1+1 | MassiveDev | 13:00 | |
| HP5+ | 200 | 1+1 | my | 10:00 | ().00 / 10:00) ? |
Ilford FP4+
| Film | EI | Dil | Source | Time | Note |
|---|---|---|---|---|---|
| FP4+ | 125 | 1+1 | Ilford | 11:00 | |
| FP4+ | 125 | 1+1 | MassiveDev | 11:00 | |
| FP4+ | 50 | 1+1 | Ilford | 9:00 | |
| FP4+ | 50 | 1+1 | MassiveDev | 8:00 | |
| FP4+ | 64 | 1+1 | my | 10:00 |
Adox CHS-II
| Film | EI | Dil | Source | Time | Note |
|---|---|---|---|---|---|
| CHS-II | 100 | Adox | 9:00 | -10% for sheet film –> 8:00 min |
Adox datablad (agitering varje minut):
CHS-II @ EI100, 9:00 min, (-10% för bladfilm) CHS-II @ EI100, 8:00 min, för bladfilm
Headline
HP5+ @ EI 200 - Rodinal 1+49 @ 20 degr, 12:00 min — detta är “min” standardtid - fungerar bra! - XTOL 1+1 @ 20 degr, 10.25 min — enl. kodak och massive dev
FP4+ - XTOL 1+1, EI 64, 20 degr 8.5min enl kodak - XTOL 1+1, EI 125, 20 degr 10 min enl kodak
- XTOL 1+2, EI 64, 20 degr 10:00 min enl kodak (-XTOL 1+2, EI125, 20 degr, 11:50 min enl kodak)
Minst 100ml konc per 80sqinch = 4st 4×5 175ml + 350ml = 525ml 160ml + 320ml = 480ml
XTOL sägs ge bättre skuggteckning, samt att den håller ner högdagrar något. Lämpar sig bra för motiv som är “direktbelysta” (enl Thomas Bertilssen - photrio) https://www.photrio.com/forum/threads/xtol-vs-rodinal.120246/#post-1593351
Delta 400 (roll) - XTOL 1+1, EI 200, 20 degr, 9:00 min