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History: Color photography by Sergey Prokudin-Gorsky, Russia, 1915
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History: Color Photography By Sergey Prokudin-Gorsky, Russia, 1915

In all but certain specialized cameras, the process of obtaining a usable exposure must involve the use, manually or automatically, of a few controls to ensure the photograph is clear, sharp and well illuminated. The controls usually include but are not limited to the following:
Focus - The adjustment to place the sharpest focus where it is desired on the subject.
Aperture - Adjustment of the lens opening, measured as f-number, which controls the amount of light passing through the lens. Aperture also has an effect on depth of field and diffraction – the higher the f-number, the smaller the opening, the less light, the greater the depth of field, and the more the diffraction blur. The focal length divided by the f-number gives the effective aperture diameter.

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Filename:127568.jpg
Album name:World & Travel
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Keywords:#history #color #photography #sergey #prokudin #gorsky #russia
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Date added:Jun 23, 2009
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