6 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
Air bells
Photography; Professional photography
Bubbles of air clinging to the emulsion surface during processing.
Variable focus lens
Photography; Professional photography
Is a lens whose focal length can be continually varied within a given range. Also known as a zoom lens.
Chemical focus
Photography; Professional photography
Point at which a lens brings the actinic rays to focus. In a modern fully corrected lens, chemical and visual focus coincide.
Multimode camera
Photography; Professional photography
Is a 35mm camera that will operate in several modes.
Backing
Photography; Professional photography
Dark coating, normally on the back of a film, but sometimes between emulsion and base, to reduce halation. The backing dye disappears during processing.
Diopter
Photography; Professional photography
Unit used to express the power of a lens. It is the reciprocal of the focal length expressed in meters.
Latitude
Photography; Professional photography
Degree by which exposure can be varied and still produce an acceptable image. The degree of latitude varies by film type. Faster films tend to have greater latitude than slower films.
