20 Terms
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Professional photography
Professional photography is the occupation of taking pictures and selling them freelance or as part of a contract usually with a publication.
Industry: Photography
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Professional photography
Light
Photography; Professional photography
Visible radiated energy which forms part of the electro-magnetic spectrum in the wavelength range of 4000-7000 Å (400-720 nm).
Quartz-iodine lamp
Photography; Professional photography
Compact tungsten filament lamp designed to maintain its colour temperature and light intensity throughout its working life.
Sodium bisulfite
Photography; Professional photography
Chemical used in fixing baths as an acidifying agent.
Belitski's reducer
Photography; Professional photography
Solution used as a chemical reducer for negatives. It consists of ferric potassium citrate or oxalate in an acid fixing solution.
Dry plates
Photography; Professional photography
Term used to describe gelatin coated plates in the days when wet collodion process was still popular.
Watkins factor
Photography; Professional photography
Is an old system of development control, based on observation of the processing image under safe lights.
Clayden effect
Photography; Professional photography
Desensitising of an emulsion by means of exposure to a strong, brief flash of light.
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