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Calibrating Zone System to Grade 3?

Ecstatic Roundabout

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Ecstatic Roundabout

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MIT. 25:35

MIT. 25:35

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I can take a densitometer reading for zone XIII off the negative and use it as a shortcut to find development times for other films I like presently or films unfamiliar I would like to test.

You might also consider using a makeshift (there was a url link here which no longer exists)to shoot a control strip to find the gamma or contrast index of your combinations and use that as a reference and/or shortcut. Saves having to go out and find and expose a scene with a known high zone (night, winter, rain, etc). Also, I like using the line plot as it minimizes exposure errors one might have with single a fixed-density development goal. (Also, you probably mean Zone 8 rather than 13, yes?)
 
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