Instruction in Photography
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In our eReader you can find the full English version of the book. Read Instruction in Photography Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Instruction in Photography
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It is now ready for printing, though a backing (see page 266) may be given it. When in contact with the negative it must be exposed for about fifteen seconds to the diffused light of a clear sky, or longer if the day be overcast.
To develop it, the following solutions should be prepared : A. Pyrogallic acid 60 grains Acetic acid ... ... ... ... 3 ounces Citric acid ... ... ... ... 15 grains Water ... ... ... ... 1 ounce B. Silver nitrate ... ... ... ... 30 grains Water (distilled) ... ... ... 1... ounce DETAILS OF THE ALBUMEN PROCESS 315 After removing the backing, wash the plate under the tap, and flow over it solution A and return it into the cup, in which have been dropped three or four drops of B. It is well to warm the developing solutions up to about 1 20 F. , as then the image will begin to appear rapidly and evenly. In about twenty seconds the shadows should show, and it should be fully developed in three or four minutes. When any signs of streaks are visible, the plate should be washed and the cotton- wool tuft applied, after which the developing solution may again be flowed over the plate.
What to read after Instruction in Photography?
You can find similar books in the "Read Also" column, or choose other free books by William De Wiveleslie Abney to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is now ready for printing, though a backing (see page 266) may be given it. When in contact with the negative it must be exposed for about fifteen seconds to the diffused light of a clear sky, or longer if the day be overcast.
To develop it, the following solutions should be prepared : A. Pyrogallic acid 60 grains Acetic acid ... ... ... ... 3 ounces Citric acid ... ... ... ... 15 grains Water ... ... ... ... 1 ounce B. Silver nitrate ... ... ... ... 30 grains Water (distilled) ... ... ... 1... ounce DETAILS OF THE ALBUMEN PROCESS 315 After removing the backing, wash the plate under the tap, and flow over it solution A and return it into the cup, in which have been dropped three or four drops of B. It is well to warm the developing solutions up to about 1 20 F. , as then the image will begin to appear rapidly and evenly. In about twenty seconds the shadows should show, and it should be fully developed in three or four minutes. When any signs of streaks are visible, the plate should be washed and the cotton- wool tuft applied, after which the developing solution may again be flowed over the plate.
What to read after Instruction in Photography?
You can find similar books in the "Read Also" column, or choose other free books by William De Wiveleslie Abney to read onlineMoreLess
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