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Posts Tagged ‘exposure scale’

I am reprinting this info here from Michael Koch-Schulte’s website RNP Array Digital Negatives because I find it extremely useful and also very difficult to locate anywhere else

Process logDensity
Silver Halide 1.6
Gum Bichromate .8 to 1.2
Cyanotype 1.2
Ware’s New Cyanotype 1.8 to 2.0
Platinum – Palladium 1.5 to 1.9 (as high a 2.9)
Albumen and Salt 2.4
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