from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A device used for measuring the sensitivity of photographic film to light.
- noun A similar device for measuring the sensitivity of eyes to light.
from The Century Dictionary.
- noun An apparatus or device of any kind for testing or determining the degree of sensitiveness of photographic films, emulsions, etc.; also, loosely, the sensitiveness of a plate (generally expressed in numbers) as indicated by a sensitometer.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Photog.) An instrument or apparatus for comparing and grading the sensitiveness of plates, films, etc., as a screen divided into squares of different shades or colors, from which a picture is made on the plate to be tested.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun photography An instrument used to measure the
sensitivityof photographic filmto light
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a measuring instrument for measuring the light sensitivity of film over a range of exposures
from The American Heritage® Dictionary of the English Language, 4th Edition
Evaluates motion picture film to determine characteristics, such as sensitivity to light, density, and exposure time required for printing, using sensitometer, densitometer, and timer lights.
Another method, employed largely in England, depends on the use of the Warnerke sensitometer.
The plates were exposed in the sensitometer as usual, except that it was found convenient in several cases to use a larger stop, measuring 0.316 cm. in diameter.
The cover of the sensitometer containing the 0. 05cm. hole is put on, and the plates exposed to sky light for a time varying anywhere between twenty seconds and three minutes, depending on the sensitiveness of the plates.
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