sensitometer

American  

[sen-si-tom-i-ter] / ˌsɛn sɪˈtɒm ɪ tər /

noun

Photography.

1. an instrument for testing the sensitivity of various types of film, consisting of an apparatus for exposing successive parts of the film to a light of standard intensity at successively increasing lengths of exposure.

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sensitometer British  

/ ˌsɛnsɪˈtɒmɪtə /

noun

1. an instrument for measuring the sensitivity to light of a photographic material over a range of exposures

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Other Word Forms

• sensitometric adjective
• sensitometrically adverb
• sensitometry noun

Etymology

Origin of sensitometer

First recorded in 1875–80; sensit(ive) + -o- + -meter

Example Sentences

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.

From Scientific American Supplement, No. 520, December 19, 1885 by Various

Some brands of plates are marked with the sensitometer number, like the Stanley, Carbutt, Seed, etc., and others are marked with a letter like the Cramer.

From Harper's Round Table, May 21, 1895 by Various

Another method, employed largely in England, depends on the use of the Warnerke sensitometer.

From Scientific American Supplement, No. 520, December 19, 1885 by Various