Results for densitometer
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densitometer

  (dĕn'sĭ-tŏm'ĭ-tər) pronunciation
n.
  1. An apparatus for measuring the optical density of a material, such as a photographic negative.
  2. See densimeter.

[DENSIT(Y) + –METER.]

densitometry den'si·tom'e·try (-ĭ-trē) n.
 
 

A device that calibrates the relative strength of a color using complementary filters. Contrast with colorimeter.



 
Marketing Dictionary: densitometer

Device used in printing to precisely measure the density of photographs and of color on a printed image to determine if the printing was consistent throughout the run.

 
Dental Dictionary: densitometer
(den′sitom′ətur)
n

An instrument for determining the degree of darkening of developed photographic or x-ray film, based on the use of a photoelectric cell to measure the light transmission through a given area of the film.

 
Veterinary Dictionary: densitometry

Determination of variations in density by comparison with that of another material or with a certain standard.

 
Wikipedia: densitometer
Heiland Densitometer TRDZ 1
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Heiland Densitometer TRDZ 1

A densitometer is a device that measures the degree of darkness (the optical density) of a photographic or semitransparent material or reflecting surface. The densitometer is basically a light source aimed at a photoelectric cell which determines the density of the sample from differences in the readings. Modern densitometers have the same components, but also have electronic integrated circuitry for better reading. There are two types:

  • Transmission densitometers that measure transparent materials
  • Reflection densitometers that measure light reflected from a surface.

Some modern types of German manufacture are capable of both types of measurements selectable by a switch. They are used in film photography to measure densities of negatives with the switch in the "T" (Transmission) position and the saturation of a resulting print in the "R" position. Such measurements enable the photographer to choose the right photo paper and the correct exposure, obviating experiments with test strips. Once the papers and darkroom have been calibrated, the first print from a previously measured negative is a success at once.

Densitometers are used for measuring color saturation by print professionals, and calibrating printing equipment. They are also used for making adjustments so outputs are consistent with the colors desired in the finished products.

See also


 
Shopping: densitometer
x rite 518 densitometer
 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Computer Desktop Encyclopedia. THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.
© 1981-2008 Computer Language Company Inc.  All rights reserved.  Read more
Marketing Dictionary. Dictionary of Marketing Terms. Copyright © 2000 by Barron's Educational Series, Inc. All rights reserved.  Read more
Dental Dictionary. Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Densitometer" Read more

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