It will cause a car to look skewed and slanted if it moves quickly perpendicular to the camera, or a building to slant if the camera pans quickly. Rolling shutter happens because of the CMOS sensor in the camera records from top to bottom instead of frame by frame. Rolling shutter is often seen in footage from iPhones and other cell phone cameras, Flip HD cameras and other digital cameras. CMOS sensors are especially prone to rolling shutter. Rolling shutter is the skew or wobble often seen when something moves quickly in front of a camera or a camera pans quickly. I’m going to quote my own book here, Plug-in to After Effects (Focal Press), which is now out of print, but I think the explanation is clear. Have you ever had skewed distortions in your footage video when the camera is panning quickly or an object is moving quickly through your shot? Or how about wobbling footage from vibrations? Yes, RS can be a creative effect! If you don’t have much time, at least watch the first two videos on this page because they are both really interesting, especially if you like to geek out on science! What is Rolling Shutter? Finally, we’ll talk about ways to add RS to your footage. Then, we’ll talk about how you can avoid, reduce, or fix RS problems both when shooting and in post. We’ll go over what the types are, with lots of examples, so you’ll recognize them when you see them. In this article, we’ll talk about What Rolling Shutter is, or RS, which we’ll sometimes refer to it.
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