In the earlier days of film, ISO was used to indicate how sensitive to light a particular type of film was, and back then was called ASA in the American continent, and DIN in the European continent.
Today the ISO indicates the sensitivity of the film or digital chip to light.
The higher the ISO the greater the sensitivity to light (and the less light that is needed to successfully record an image).
I.S.O stands for International Standards Organization.
ASA stands for American Standards Association.
DIN stands for Deutsches Institut für Normung.
Today the ISO indicates the sensitivity of the film or digital chip to light.
The higher the ISO the greater the sensitivity to light (and the less light that is needed to successfully record an image).
I.S.O stands for International Standards Organization.
ASA stands for American Standards Association.
DIN stands for Deutsches Institut für Normung.
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Below is a conversion Table ISO = ASA = DIN
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ISO Scales
Below is a table with ISO scales (1 & 1/3 stops)
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