A film is ISO when it is shot and processed in ISO condition, that's it.
If you have better results with a different EI in non-ISO condition, I don't think you have a case for Consumer Report...
10-31-2007 10:02 PM
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Using film since before it was hip.
"One of the most singular characters of the hyposulphites, is the property their solutions possess of dissolving muriate of silver and retaining it in considerable quantity in permanent solution" — Sir John Frederick William Herschel, "On the Hyposulphurous Acid and its Compounds." The Edinburgh Philosophical Journal, Vol. 1 (8 Jan. 1819): 8-29. p. 11
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