Film comparison
Rollei Ortho 25 Plus vs Silberra S25
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 |
Rollei Ortho 25 Plus
|
Silberra S25
|
|---|---|---|
| Maker | Rollei | Silberra |
| ISO | 25 | 25 |
| Type | B&W negative | B&W negative |
| Process | B&W | B&W |
| Status | In production | In production |
| Formats | — | — |
| Grain (RMS) | — | — |
| Resolving power | — | — |
| Latitude | — | — |
| First released | 2017 | 2020 |
| Reciprocity data | No | No |
| Published times | 18 | 10 |
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 | Ortho 25 Plus EI 25 | S25 EI 25 |
|---|---|---|
| stock · 20 °C | 10:00 | 8:00 |
Also with a box-speed time for each film, but not at a shared dilution and temperature: ADOX Rodinal, Compard R09 One Shot, Kodak D-76.