Why Rolling Shutter Bends Fast-Moving Objects in Video

Why Rolling Shutter Bends Fast-Moving Objects in Video

Many cameras read a frame in rows, so the top and bottom can capture different instants.

A fast sideways pan can make straight vertical lines tilt. A quickly moving object can appear stretched or skewed because its position changes while the sensor is reading the frame.

Readout time varies with the camera and recording mode. Changing resolution, crop or frame rate can change the amount of distortion as well as the recorded detail.

Record a pan past a fence or building in each mode you use. Comparing frames side by side gives a practical sense of how much motion each mode can handle.

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