Culture · 6 pages · 12 min

How film exposure is a relationship of three settings

Aperture, shutter time, and film sensitivity set exposure together, and each changes the picture.

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From the opening

Film exposure is the light the emulsion is given, and the camera sets it by aperture, shutter time, and the film's sensitivity acting together. Change one for the sake of the picture and another has to move if that same exposure is supposed to remain. The opening covers three settings, one exposure, depth traded against motion, and where reciprocity stops holding.

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Inside

Three settings, one exposure
Depth traded against motion
Where reciprocity stops holding
Flash changes which term works
Where the idea stops applying
A distinction worth keeping

Sources

The reciprocal relation of aperture, time, and film speed
Reciprocity failure outside ordinary exposure times

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How film exposure is a relationship of three settings

From the opening

Inside

Sources

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