A Manual of Photographic Chemistry, Theoretical And Practical
The book A Manual of Photographic Chemistry, Theoretical And Practical was written by author J Traill John Traill Taylor Here you can read free online of A Manual of Photographic Chemistry, Theoretical And Practical book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Manual of Photographic Chemistry, Theoretical And Practical a good or bad book?
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Other causes may also in- tervene, notably metallic particles in the paper. The latter can always be distinguished from all other spots, there is a small black nucleus surrounded with a circle of white. 5. Yellowness of the High Lights. — a. The paper has been kept too long after sensitizing, h. The fixing bath has been acid, or the action of a neutral one continued too long, 6. Intense hronzing of the deep shadows usually arises from having a large excess of silver in the sensitizing bath, and... printing from an intense negative which requires a long expo- sure to light. 7. Yellow spots on the surface or hack of a ])rint arise from the paper, before or after sensitizing, having come in contact with hyposulphite of soda ; the least trace of the salt is sure to cause the mischief. If it has arisen from handling the paper with imperfectly washed hands, the impression of the fingers will be distinctly marked. Too great care cannot be exercised in handhng or laying down positive paper. Everything that touches it must be dry and clean.
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