Practice question · Estimate
The textured range of a normal print runs from Zone III to Zone VII. How many stops of subject brightness is that?
Estimate on a scale from 0 stops (0) to 12 stops (12).
Hints
- One zone is one stop.
- Count the intervals, not the zones.
Show the answer
4 (answers within ±0.5 count)
Why
Four stops. From III to VII is four intervals, and that is the range in which a viewer can actually see detail. A subject spanning seven stops therefore has three stops of information that must be pushed into the textureless ends or squeezed in by development, which is the whole business of contrast control.
Practise The Zone System and Previsualisation
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