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Film comparison

Film Photography Project Eastman SO-331 High Contrast vs Rollei Ortho 25 Plus

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.

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Specification side by side

Film Film Photography Project Eastman SO-331 High Contrast Film Photography Project Eastman SO-331 High Contrast Rollei Ortho 25 Plus Rollei Ortho 25 Plus
Maker Film Photography Project Rollei
ISO 25 25
Type B&W negative B&W negative
Process B&W B&W
Status Discontinued In production
Formats — —
Grain (RMS) — —
Resolving power — —
Latitude — —
First released — 2017
Reciprocity data No No
Published times 0 18

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.