Film comparison
EFKE (Fotokemika) KB21 / R21 / PL21M vs Ilford Delta 100 Pro
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 |
EFKE (Fotokemika) KB21 / R21 / PL21M
|
Ilford Delta 100 Pro
|
|---|---|---|
| Maker | EFKE (Fotokemika) | Ilford |
| ISO | 100 | 100 |
| Type | B&W negative | B&W negative |
| Process | B&W | B&W |
| Status | Discontinued | In production |
| Formats | — | — |
| Grain (RMS) | — | — |
| Resolving power | — | — |
| Latitude | — | −1.0 / +1.0 stops |
| First released | 1974 | 1992 |
| Reciprocity data | No | Yes |
| Published times | 0 | 107 |
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.
No developer has a time for all of these at the same dilution and temperature
Each film’s own page lists every developer it has published times in.