Dark Current

Dark Current

A.k.a. noise, dark noise. Pixels collect signal-charges in the absence of light over time, which can vary from pixel to pixel, and the result is known as dark current. PowerShot digital cameras reduce or eliminate dark current before a picture is captured.

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Part of Speech: noun
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Industry/Domain: Consumer electronics
Category: Digital camera
Company: Canon
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Related terms

dark current

Engineering; Electronic engineering

The usually tiny current flowing through a darkened photoconductive cell, phototransistor, or glow-discharge device.

dark current

Telecommunications; General telecom

The external current that, under specified biasing conditions, flows in a photoconductive detector when there is no incident radiation.

dark current

Science; General science

An ambiguous term used in connection with both gaseous-discharge devices and photoelectric cells or tubes. In gaseous-conduction tubes it refers to the region of operation known ...

dark current

Aviation; Aeronautics

The current which flows in a photoelectric device, such as a photodiode or phototransistor, when no light is falling on the light-sensitive junction.

cathode dark current

Engineering; Electronic engineering

The electron emission from the photocathode of a camera tube when there is no illumination.

auto-bracketing

Consumer electronics; Digital camera

A feature of some advanced cameras, where the camera will take several succesive shots (usually three) with slightly different settings.

blade

Consumer electronics; Digital camera

The slats that make up the centre of the shutter panel.

Coolpix Connect

Consumer electronics; Digital camera

Name given to a Nikon service that allows users to upload 50MB of images from COOLPIX cameras to a photo storage website, where friends and family can view these images for two ...

Coolpix Connect services

Consumer electronics; Digital camera

A Nikon service for uploading pictures to the Internet over a wireless (WiFi) local area network (LAN), including public “BB mobile points” (a service available only in Japan) and ...

setting guide

Consumer electronics; Digital camera

An on-screen display that assists the user in selecting an option.

setup menu

Consumer electronics; Digital camera

A menu of basic camera settings.

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