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Actinometer
Very early type of exposure calculator.
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ActinometersEdit
Actinometers were the first light meters. They typically had the shape of a pocket watch and used light sensitive photo print paper as means of measuring.
-Actinometer - early type of exposure calculator.
-Acuity - subjective term for the visual sharpness of an image.
-Acutance - objective measurement of image sharpness.
actinium, actinobacteria, actinodine, actinolite, actinometer, actinomorphic, actinomycetes, actinophryid, actinophryids, actinopteri, actinopterygii, actinozoa
ἂκ"ωρ
aktor ...
 See also: Meter, Type, Exposure, Short, Speed
  
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