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Reciprocity law (exposure)
| Light Glossary |
Exposure = intensity x time. when you cut either the intensity or the time (shutter speed) in half you have only to double the other to keep your meter happy, up and down the exposure scale, except at the far ends, where the law is not enforced.
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Heat waves, английский
Extreme heat eventually causes some surfaces to radiate "shimmering" waves that are emphasized by long lenses. they decrease definition but in-crease drama - as in lawrence of arabia, brilliantly lit by freddie young.
Flashing film, английский
Exposing film to low levels of even illumination primarily to decrease contrast; controlled fogging.
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