The American annual of photography . 0 A STUDY. E. G. LOCAL REDUCTION AND INTEN-SIFICATION By WILLIAM H. ZERBE. N some recent experiments which I had been con-ducting, it was necessary to resort to some accu-rate local reduction and intensification on thenegatives which I had been using. In somecases a very small area was reduced, and inothers large ones, and again with the exception of small parts,the whole negative was reduced to clear glass. The method I used I believe to be original, and worked sosatisfactorily, I thought perhaps the readers of the Annualmay care to try it. To a
The American annual of photography . 0 A STUDY. E. G. LOCAL REDUCTION AND INTEN-SIFICATION By WILLIAM H. ZERBE. N some recent experiments which I had been con-ducting, it was necessary to resort to some accu-rate local reduction and intensification on thenegatives which I had been using. In somecases a very small area was reduced, and inothers large ones, and again with the exception of small parts,the whole negative was reduced to clear glass. The method I used I believe to be original, and worked sosatisfactorily, I thought perhaps the readers of the Annualmay care to try it. To a negative that requires reducing or intensifying locally,I apply a waterproof varnish, and which is also proof againstthe chemicals- used, with a good camels hair brush about oneinch around the part to be reduced or intensified, having it accurately. After the varnish is dry, if to be re-duced, a solution of Farmers reducer is appMed with a camels-hair brush, or a pad of cotton, until the desired amount of re-duction has taken place, when the ne
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorktennantandw
