The modern practice of retouching negatives, as practiced by French, German, English & American experts (1889)
Piquepe, Paul · New York : The Scovill & Adams Company, 423 Broome Street · leaf 37
ish as deep as possible, to soften by the aid of alcohol vapor, and then to heat strongly. This will fasten the retouching and allow another coat of varnish, quickly applied, to be given. After the spots are all taken out by stippling, the modeling may be done by hatching, making small lines only,… … upon. It is important that the hatching should be done in a regular manner, or a very scratchy and uneven effect will be produced. Great care must be taken to avoid crossing the lines, or making two strokes touching one another, this being
Photography · Photography -- Retouching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
