The period of time when all of the pixels in the image are accumulating data. For a CCD, this period of time is equal to the exposure time setting. For a CMOS camera with rolling shutter, this period of time is equal to the time between when the last line of the image starts exposure and when the first line of the image ends exposure.
“Pseudo” global shutter mode by a camera only with rolling shutter.
Stimulated by an external trigger, all the readout lines start exposing. The first line of the sensor exposes for the exposure time set by software. The subsequent lines expose for the exposure time plus readout time. This mode allows for external equipment to be the master and to precisely control the start of the global exposure timing.
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