Film comparison
Ilford Delta 400 Professional vs Rollei Retro 400S
What the catalogue holds about each, and the times they share. A dash means a figure has not been read off a datasheet — nothing here is estimated.
Specification side by side
| Film |
Ilford Delta 400 Professional
|
Rollei Retro 400S
|
|---|---|---|
| Maker | Ilford | Rollei |
| ISO | 400 | 400 |
| Type | B&W negative | B&W negative |
| Process | B&W | B&W |
| Status | In production | In production |
| Formats | — | — |
| Grain (RMS) | — | — |
| Resolving power | — | — |
| Latitude | −1.0 / +3.0 stops | — |
| First released | 2001 | — |
| Reciprocity data | Yes | No |
| Published times | 267 | 34 |
Developers in common
Each film’s time at its own box speed in the same developer, at the same dilution and temperature. Every time opens the full table for that film in that developer.
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+25 · 20 °C | 9:00 | 10:30 |
| 1+50 · 20 °C | 20:00 | 22:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| stock · 20 °C | 9:30 | 12:00 |
| 1+1 · 20 °C | 14:00 | 16:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+9 · 20 °C | 7:00 | 12:00 |
| 1+14 · 20 °C | 12:00 | 18:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+4 · 20 °C | 8:00 | 10:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+19 · 20 °C | 7:30 | 6:30 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+1 · 20 °C | 11:30 | 16:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| stock · 20 °C | 9:30 | 12:00 |
| 1+1 · 20 °C | 14:00 | 16:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| Dilution B (1+31) · 20 °C | 7:30 | 10:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+4 · 20 °C | 6:30 | 7:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+1 · 20 °C | 11:30 | 17:00 |
| Dilution · °C | Delta 400 Professional EI 400 | Retro 400S EI 400 |
|---|---|---|
| 1+4 · 20 °C | 7:30 | 8:00 |