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Film comparison

Film Photography Project Sonic 25 BW Film 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.

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Specification side by side

Film Film Photography Project Sonic 25 BW Film Film Photography Project Sonic 25 BW Film Silberra S25 Silberra S25
Maker Film Photography Project 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 — 2020
Reciprocity data No No
Published times 2 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.

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.

Also with a box-speed time for each film, but not at a shared dilution and temperature: Kodak HC-110.