Professional photography

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

Selenium cell

Photography; Professional photography

Light sensitive cell used in many types of exposure meters. It generates electricity in direct proportion to the amount of light falling upon its surface.

Additive synthesis

Photography; Professional photography

Method of producing full-color images by mixing light of the three primary colour wavelengths, blue, green and red.

Petzval lens

Photography; Professional photography

Early lens system developed by Joseph Petzval. It had a very wide aperture and was relatively free from aberration. Many modern lenses have developed from this simple three-element design.