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Global-Shutter vs. Rolling-Shutter Readouts

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Dr. Robert LaBelle, QImaging and Photometrics

New sCMOS cameras overcome rolling-shutter artifacts by combining the best of both global and rolling shutters to achieve the simultaneous exposure with all rows, all while maintaining the frame rate and low noise benefits of rolling-shutter readouts. Since the inception of digital microscopy, scientific-grade charge-coupled device (CCD) cameras have been the standard imaging technology for many cell biologists because of their sensitivity, linear response to light and low noise characteristics. But as research probes deeper into dynamic cellular processes, imaging requirements...Read full article

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    Published: December 2014
    Glossary
    dark current
    The current that flows in a photodetector when there is no optical radiation incident on the detector and operating voltages are applied.
    quantum efficiency
    Quantum efficiency (QE) is a measure of the effectiveness with which a device or system, typically in the context of photonics or electronics, converts incoming photons (light) into a useful output signal or response. It is expressed as a ratio or percentage and quantifies the number of electrons or charge carriers generated in response to the incident photons. In other words, quantum efficiency provides a measure of how well a device can capture and utilize photons to produce an electric...
    bioluminescence
    Heatless light emissions from living organisms caused by the combination of oxygen and pigments such as luciferin.
    chemiluminescence
    A chemical reaction involving the production of light. The reaction of ethylene with ozone is chemiluminescent.
    camerasCCDCMOSFeaturesOpticsImagingMicroscopyBiophotonicsAmericassCMOS camerarolling shutterdigital microscopylive-cell fluorescencescientific complementary metal oxide semiconductorhigh frame rateDark currentphotometric respondeback illuminationquantum efficiencybioluminescencechemiluminescencein vivo fluorescencemultitap CCDRobert LaBelle

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