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Producing Negative: Man Ray also made negative prints, processed hot normally and with edge reversal. He diffused the imag by deliberately increasing the size of the silver grain; These controls are adaptations of the photographic p« cess. Other physical methods of distorting the Camera image have been devised. Texture is introduced into th gelatin emulsion of the negative by subjecting it to rapi temperature changes, producing reticulation, a netlik structure in the normally transparent film.By then a new process had been made public for producing negatives on glass coated with light-sensitive collodion. It was not patented, and professional portraitists thought that they were at last freed from having to pay for the right to photograph. But Talbot felt that the new collodion process itself was an infringement for, like the calotype, it was a negative-positive system, and although the negative support was glass instead of paper, the image was developed in pyrogallic acid, which he considered identical to his "gallo-nitrate of silver" solution. He sued William Henry Sylvester, who operated a London studio under the name "Martin Laroche," for working the new collodion process without a calotype license, and took him to court in 1854.
5. Never be too proud to reshoot a poor negative. Did you make an error in exposure? Did your tripod slip and cause a fuzzy negative? Or did you make one of the other dozens of errors which can almost but not quite ruin a negative? If so, do not try to cover up by struggling with the negative by means of darkroom trickery, but instead shoot the picture over again if that is at all possible. To reshoot is to confess a measure of failure to "your client, of course, but you can make up for that by going all-out for a masterpiece on your second try. |
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