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Contrast masking is a traditional "wet" darkroom technique used to help bring the contrast range of a film image into line with what can be printed on paper. A black and white negative is made from the original positive slide and sandwiched together with it for printing. The negative will be darker in areas that are lighter in the slide and lighter in shadow areas. When combined, the result will add density to the slide proportional to the brightness of each part of the original. Digital darkroom techniques allow us to achieve a similar effect and much more....

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