Retouching Transparencies

Color transparencies ("chromes," as the pros refer to them) are a little easier to retouch, because the image looks more like the subject it is supposed to represent. Chromes can be retouched using bleaches, dyes, or both (although when using both, the bleaching needs to be done first). It's possible to use selective bleaching to remove one color at a time (there are special bleaches for each color). Overall bleaching reduces each of the three colors in an image by an equal amount, and total bleaching removes all the colors in an area. Bleached areas can even be partially restored ("regenerated" is the term), which makes the process a little forgiving. Cyan, magenta, and yellow dyes can be used to retouch transparencies, too. Special dyes that match the original transparency dyes both visually and when the chrome is reproduced must be used. In days of yore there were additional hair-raising retouching techniques that involved major surgery on the transparency (quite literally) using cutting knives and butting portions of the transparency together.

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