Image sensors and optical devices
Why do fast-moving subjects appear distorted with the rolling shutter method of CMOS image sensors?
- ABecause exposure and readout timing are offset row by row
- BBecause all pixels are exposed at the same time
- CBecause of the color filter arrangement
Show answer and explanation
Answer: A. Because exposure and readout timing are offset row by row
With a rolling shutter, pixels are exposed and read out one row at a time, so the top and bottom rows are captured at different times. Fast-moving subjects can therefore appear skewed. A global shutter, which exposes all pixels at once, does not cause this distortion.