Don't confuse the timing of light acquisition with read-out at the overall focal plane level. Numerous CMOS, CCD, and other types of focal plane / 2D detectors

Don't confuse the timing of light acquisition with read-out at the overall focal plane level. Numerous CMOS, CCD, and other types of focal plane / 2D detectors have global shutters where all pixels 'integrate photons or energetic particles' at the same time for a set amount of time. Read-out is performed in a rolling fashion... the data generally has to be serialized for analog to digital conversion (although not always) and/or transmission over a communication protocol or write to file. A global shutter detector at the hardware level has settings for framerate and light integration time (among other things). Readout time is more or less constant for a particular camera sensor. So if integration requires say 20ms, and readout takes 30 ms... you're looking at about 20 FPS image acquisition speed. Good overview: http://www.red.com/learn/red-101/global-rolling-shutter http://www.red.com/learn/red-101/global-rolling-shutter