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At its core, the rolling shutter mechanism operates by exposing different parts of the sensor sequentially, rather than capturing the entire image all at once. This process has distinct implications for how motion and lighting are handled during image capture. In contrast to a global shutter, which takes a snapshot of the entire scene simultaneously, a rolling shutter reads the image line by line. This characteristic allows for high-speed readout, making it particularly useful in dynamic environments where quick image capture is essential.