This is more controlled, but not reversible.īleach reduction can be applied during any color processing including original camera negative (OCN), intermediate positive (IP), intermediate negative or release print. Technicolor Rome is credited with introducing the concept and offers its own ENR process, which adds a separate black and white development. Some can only do a complete bleach bypass others can offer 50% reduction by skipping the bleach accelerator. Consequently it is more expensive to do and there is usually an extra charge.Įach lab has its own recipe for the technique. To alter the bleach bath labs must stop normal processing to reconfigure the machines, and less silver is recovered. Sometimes there is also a slight alteration of color balance, usually towards cyan. The retained silver increases the contrast and grain, while the reduced dye desaturates the picture. Reducing or skipping the bleach bath during color film processing, leaves some or all the silver image and couples less of the color dye.
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