I played with development photos in a darkroom a long time ago. I don't think one second actually makes much difference.
Depends on how powerful of a light you’re using. 1 second on a 7 second exposure is too much. One second on a 20, not.
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Depends on how powerful of a light you’re using. 1 second on a 7 second exposure is too much. One second on a 20, not.