Professional Portrait Ists: 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 portrait ists 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.
You will have to pay the stores a commission, perhaps as high as one-third but certainly no higher, on the orders they sell for you, and you will have to give professional portrait ists photographers a similar discount from your regular rate. In the case of a professional portrait ists portrait photographer who sends you negatives of uniform density and degree of enlargement, you would find it profitable to give even greater discounts.
There's a good reason for the existence of so many specialists in the various fields of professional portrait ists photography. The specialist has a higher percentage of successful pictures and a lower percentage of failures than the one who tries to do everything. For that reason, the reader of this volume should not expect to master all of the varied phases of photography whose opportunities are described. Such versatility is by no means necessary and probably is not even desirable.
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Photography
