Magazine
About us
Join
|
|
SWPP Home Magazine About us Join |
Term - Watkins factor |
| Watkins factor | SWPP Photographic Glossary | Monday 12th April 2021 |
|
Watkins factorIs an old system of development control, based on observation of the processing image under safe lights.
|
|
Information provided by: SWPP Contact SWPP |