In photography, filter factor refers to the multiplicative amount of light a filter blocks. ==Converting between filter factors and stops== The table below illustrates the relationship between filter factor, the amount of light that is allowed through the filter, and the number of stops this corresponds to. ==Calculating exposure increase== The nu...
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http://en.wikipedia.org/wiki/Filter_factor
(from the article `filter`) Since filters absorb some of the light that passes through them, an increase in the calculated exposure is usually required. This increase is known ...
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http://www.britannica.com/eb/a-z/f/25
The increased exposure needed to compensate for the amount of light absorbed by a filter. A factor of two indicates you need to give the film one stop more exposure; a factor of three needs two stops and a factor of six needs three stops more
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http://www.encyclo.co.uk/local/21048
The increased exposure needed to compensate for the amount of light absorbed by a filter. A factor of two indicates you need to give the film one stop more exposure; a factor of three needs two stops and a factor of six needs three stops more.
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
a number indicating the increased exposure that a particular film should receive when a photograph is taken using a particular filter.
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https://www.infoplease.com/dictionary/filter-factor
No exact match found.
