Practice question · Estimate
A black-and-white negative runs to about 1.35 in density above base plus fog. How many stops of density range is that?
Estimate on a scale from 0 stops (0) to 12 stops (12).
Hints
- One stop is 0.30 in density.
- Divide 1.35 by 0.30.
Show the answer
4.5 (answers within ±0.5 count)
Why
About 4.5 stops. That is the range the scanner has to record cleanly, and it is modest, a colour transparency runs to 3.5 in density, nearly twelve stops, which is why slide scanning is so much more demanding than black-and-white negative scanning.
Practise The Darkroom, Digital and Hybrid Workflows
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