3 |
Developers
One developing agent is best, two is okay, three is very suspect, and four the guy is definitely a jerk.
-Bob Schwalberg
Developers are made up of four basic components:
- Developing agent.
- Preservative, which slows the rate of developer oxidation.
- Accelerator, which energizes the developer.
- Restrainer, which restricts the formation of excessive fog and/or slows the rate of development.
All four of these components are necessary for the development process to be successful. Often, however, one chemical will serve more than one function. For example, sodium sulfite is usually used as a preservative to prevent oxidation. However, in the film-developing formula Kodak D-23 the large amount of sodium sulfite (100.0 grams) serves ...
Get The Darkroom Cookbook, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
