The Photographic Image a Theoretical And Practical Treatise of the Development
The Photographic Image a Theoretical And Practical Treatise of the Development
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In our eReader you can find the full English version of the book. Read The Photographic Image a Theoretical And Practical Treatise of the Development 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 The Photographic Image a Theoretical And Practical Treatise of the Development
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It is strong and keeps well owing to the presence of DEVELOPMENT IN COLLODION PROCESS. 177 sulphuric acid preventing oxidation. A little alcohol should be added to it when it does not flow well.
2. Energetic Developer.
Ferrous sulphate . 40 parts.
Acetic acid No. 8 . 30 " . 20 " Copper acetate .
. . N " . 480 " This developer should be prepared several hours beforehand and heated to 25° C. For use. It develops rapidly, yielding soft nega- tives full of details. The silver bath should be acidifi...ed with acetic acid, C. P.
If, instead of acetate, 1J parts of sodium formate and 3 parts of formic acid are added, the most powerful developer employed in the wet collodion process is obtained.
3. Weak Developer. Ferrous sulphate . 15 to 20 parts. Acetic acid No. 8 . . . 45 '* Sulphuric acid . . . . 2 " Water 480 " 4. Developer for Line work8. (Engravings, Etc. ) Ferrous sulphate . . C 25 parts. Tartaric acid . ■ . 4 to 5 " Water 480 " Alcohol quant. 8uff.
178 THE PHOTOGRAPHIC IMAGE.
This developer kept in the light does not oxidize.
What to read after The Photographic Image a Theoretical And Practical Treatise of the Development?
You can find similar books in the "Read Also" column, or choose other free books by Peter C Duchochois to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is strong and keeps well owing to the presence of DEVELOPMENT IN COLLODION PROCESS. 177 sulphuric acid preventing oxidation. A little alcohol should be added to it when it does not flow well.
2. Energetic Developer.
Ferrous sulphate . 40 parts.
Acetic acid No. 8 . 30 " . 20 " Copper acetate .
. . N " . 480 " This developer should be prepared several hours beforehand and heated to 25° C. For use. It develops rapidly, yielding soft nega- tives full of details. The silver bath should be acidifi...ed with acetic acid, C. P.
If, instead of acetate, 1J parts of sodium formate and 3 parts of formic acid are added, the most powerful developer employed in the wet collodion process is obtained.
3. Weak Developer. Ferrous sulphate . 15 to 20 parts. Acetic acid No. 8 . . . 45 '* Sulphuric acid . . . . 2 " Water 480 " 4. Developer for Line work8. (Engravings, Etc. ) Ferrous sulphate . . C 25 parts. Tartaric acid . ■ . 4 to 5 " Water 480 " Alcohol quant. 8uff.
178 THE PHOTOGRAPHIC IMAGE.
This developer kept in the light does not oxidize.
What to read after The Photographic Image a Theoretical And Practical Treatise of the Development?
You can find similar books in the "Read Also" column, or choose other free books by Peter C Duchochois to read onlineMoreLess
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