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Synonyms for filter

Synonyms for filter

an electrical device that alters the frequency spectrum of signals passing through it

remove by passing through a filter

run or flow slowly, as in drops or in an unsteady stream

References in periodicals archive ?
Fortunately, infrared imagery using a digital SLR is possible by simply placing an infrared filter over your lens, (just as you would do for a 35-millimetre camera loaded with infrared film).
Using a 14-inch Schmidt-Cassegrain, a monochrome webcam, and a 1-micron infrared filter, Pellier imaged the nightside of Venus glowing right through the planet's clouds in May 2004, when Venus appeared as a 19%-illuminated crescent.
The VisionPak camera module typically consists of multiple components including CMOS image sensor die, passives, infrared filter glass, lens mount, and lens barrel, and sometimes a separate driver IC.
The ICM-102Ala employs a lens with a one-piece plastic housing with IR filter, with an infrared filter and an F-number of 2.
It was a regular 20D with a wider passband infrared filter and other features added (S&T: November 2005, page 84).
The Company's products encompass a range of technologies, including gas chromatography, infrared filter spectrometers, microwave heating, extraction, and ion analysis.
Thus, the infrared filter is simply a "must-have" when working with such lenses whether the imaging is in black and white or color.
Thus, without the infrared filter, a set of color-separation exposures of an object that emits infrared radiation would be contaminated.
Using a visually opaque infrared filter in front of the CCD reveals an unfamiliar sky.