Definition of "underexposing" [underexposing]

• Present participle of underexpose. (verb)

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• "To avoid overexposing or underexposing the surroundings, before the fireworks starts, try several variations of shutter speed, ISO, and focal length."
• "Many of these effects can be enhanced by deliberately underexposing and pushing film (to make the grain larger and more dense to create higher contrast) or pulling film to do the opposite."
• "I can not help but agree with thanann, when i saw this photos "recently" read 2 months ago , i had not read 'Strobist' I didn't get why underexposing a background was 'cool'."