Lecture 16: Cameras and Lenses (57)
elizabethyli

The airplane propeller one is really interesting to me, as I've never seen something like it before. For the rolling shutter to produce those artifacts, the propeller must be rotating much faster than the pixel reads, causing the camera to capture bits of it while in different parts of the rotation. It's pretty hard for me to picture how the rotating leads to the vertical lines.

Helen-Yang

Here is a helpful gif that visually explains how the lines are created as a result of the rolling shutter (pixel values read line by line as opposed to all at once): https://gizmodo.com/this-hypnotic-gif-explains-why-spinning-propeller-photo-1742770647. The original photographers explain that they took this picture with an iPhone and the propeller rotated about 5 times while the image was being captured (https://www.flickr.com/photos/sorenragsdale/3192314056).

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