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Jay DeFehr |
23:05 9 Apr 06 |
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David Eisenlord |
11:57 5 Feb 06 |
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Steve Nicholls |
17:03 24 Jan 06 |
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David Jade |
11:11 25 Jan 06 |
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Phil Davis |
9:28 26 Jan 06 |
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Steve Nicholls |
16:47 26 Jan 06 |
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Sandy King |
7:12 4 Mar 06 |
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Re: .1 above base fog or approximate CI ? |
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Phil Davis |
10:21 4 Mar 06 |
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Sandy --
Kodak provided a sort of protractor device for determining the CI of film curves mechanically. I found, empirically, that similar values can be found by relating speed point density to curve gradient, and that's how the Plotter works. I've now forgotten the factor used but the general procedure ("fractional gradient") is explained in my book.
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Sandy King |
10:39 4 Mar 06 |
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Jorge Gasteazoro |
12:54 14 Jan 06 |
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